Updated on 2025/09/15

写真a

 
YAMADA Akihiro
 
Organization
Faculty of Advanced Engineering
Department
School of Engineering Department of Materials Chemistry
Title
Associate Professor
External link

Degree

  • 博士（理学） ( 2007.3   愛媛大学 )

  • 修士（理学） ( 2004.3   愛媛大学 )

  • 学士（理学） ( 2002.3   愛媛大学 )

Research Field

  • glass, melt, high pressure and temperature

Research Experience

  • The University of Shiga Prefecture   School of Engineering Department of Materials Science   Associate Professor

    2021.1

  • The University of Shiga Prefecture   School of Engineering Center for Glass Science and Technology   Lecturer

    2019.4 - 2020.12

  • The University of Shiga Prefecture   School of Engineering Center for Glass Science and Technology   Assistant Professor

    2013.4 - 2019.3

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    Country：Japan

  • The University of California, Davis   Department of Geology   Postdoctoral Research Scholar

    2008.1 - 2008.12

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    Country：United States

Association Memberships

  • The Ceramic Society of Japan

    2013.4

  • Japan Association of Mineralogical Sciences

    2009.9

  • Japan Society of High Pressure and Technology

    2002.9

Research Areas

  • Natural Science / Solid earth sciences

  • Nanotechnology/Materials / Inorganic compounds and inorganic materials chemistry

Committee Memberships

  • （公）日本セラミックス協会関西支部   企画委員  

    2023.4   

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    Committee type：Academic society

  • (一社)ニューガラスフォーラム若手懇談会   企画委員  

    2021.10 - 2023.10   

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    Committee type：Academic society

Available Technology

  • ガラスの融液物性・熱物性と破壊現象の研究

Papers

  • Synthesis and structure of anisotropic borosilicate glasses under differential stress at high pressure and temperature Reviewed

    Shingo Taniguchi, Akihiro Yamada, Tomohiro Ohuchi, Koji Ohara, Daisuke Shibata, Mizuki Nishiwaki, Jun Matsuoka

    Journal of American Ceramic Society   2025.6

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1111/jace.70040

  • Indentation stress fields in brittle materials: A micro-photoelastic investigation in silicate glasses Reviewed International coauthorship

    Gustavo Alberto Rosales-Sosa, Etienne Barthel, Yoshinari Kato, Matthieu Bourguignon, Akihiro Yamada, Tomiki Inoue, Shingo Nakane, Hiroki Yamazaki

    Acta Materialia   292   2025.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.actamat.2025.120973

  • Densification of sodium and magnesium aluminosilicate glasses at ambient temperature: structural investigations by solid-state nuclear magnetic resonance and molecular dynamics simulations Reviewed International coauthorship

    Millena Logrado, Yara Hellen Firmo Gomes, Tomiki Inoue, Shingo Nakane, Yoshinari Kato, Hiroki Yamazaki, Akihiro Yamada and Hellmut Eckert

    Physical Chemistry Chemical Physics   26   27348 - 27362   2024.10

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/d4cp02431a

  • Structural Aspects of Ambient-Temperature Densification of Highly Crack-Resistant Borosilicate and Aluminoborosilicate Glasses: Two Case Studies Examined by Solid-State NMR Reviewed International coauthorship

    Yara Hellen Firmo Gomes, Millena Logrado, Tomiki Inoue, Shingo Nakane, Yoshinari Kato, Hiroki Yamazaki, Akihiro Yamada and Hellmut Eckert

    The Journal of Physical Chemistry B   128 ( 14 )   3508 - 3520   2024.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.jpcb.4c00560

  • Effect of grain size on amorphization mechanism and kinetics of bridgmanite in shocked meteorites

    Masayuki Nishi, Si Jin, Katsutoshi Kawano, Hideharu Kuwahara, Akihiro Yamada, Shogo Kawaguchi, Yuki Mori, Tatsuhiro Sakaiya, Tadashi Kondo

    Progress in Earth and Planetary Science   2023.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    <jats:title>Abstract</jats:title><jats:p>Bridgmanite formation and amorphization in shocked meteorites constrain the pressure and temperature conditions during planetary impact. However, the effect of the bridgmanite grain size on its amorphization kinetics is still unclear. Here, the amorphization mechanism and kinetics of fine-grained polycrystalline bridgmanite were studied at high temperatures up to 1080 K. High-temperature time-resolved synchrotron X-ray diffraction measurements showed that significant volume expansion due to temperature-induced amorphization caused static stress, which then hindered amorphization progress. Further, the temperature required for the amorphization of fine-grained bridgmanite (~ 1 μm) was found to be approximately 100 K higher than that required for the amorphization of coarse-grained samples (&gt; 10 μm). We also noted that amorphization preferentially commenced at the twin planes and subgrain boundaries of bridgmanite grains, resulting in lower amorphization temperatures for the coarse-grained samples. The limited number of such specific locations in fine-grained natural bridgmanite suggested that grain boundary amorphization may be the dominant mechanism for bridgmanite amorphization in shocked meteorites. This unique amorphization kinetics would support the preservation of bridgmanite during the post-shock annealing in the shocked meteorite. Although bridgmanite amorphization starts easily at temperatures above ~ 420 K, a small amount of bridgmanite grains can survive at temperatures above 800 K by the effect of amorphization-induced stress.</jats:p>

    DOI： 10.1186/s40645-023-00572-0

  • Densification of Sodium Borosilicate Glasses at Ambient Temperature: Structural Investigations by Solid-State Nuclear Magnetic Resonance and Raman Scattering Reviewed International coauthorship International journal

    Millena Logrado, Tomiki Inoue, Shingo Nakane, Yoshinari Kato, Hiroki Yamazaki, Akihiro Yamada, Hellmut Eckert

    The Journal of Physical Chemistry Letters   14   4471 - 4481   2023.5

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS Publications   Participation form：Joint(The vice charge)  

    Alkali-borosilicate glasses with composition (80-x)SiO2-xB2O3-20Na2O (10 ≤ x ≤ 30) were subjected to a 25 GPa compression and decompression at room temperature, resulting in density increases between 1.4% and 1.9%. The structural changes associated with this process have been investigated and compared with uncompressed glasses having the same thermal history. Systematic trends are identified, using Raman scattering and multinuclear solid-state Nuclear Magnetic Resonance (ssNMR). Perhaps counterintuitively, pressurization tends to increase the concentration of three-coordinated boron species (B(III) units) at the expense of fourcoordinated boron (B(IV) units). 23Na NMR spectra show a systematic shift toward higher frequencies in the pressurized glasses, consistent with shorter average Na−O distances. The results are consistently explained in terms of a breakage of Si−O−B4 linkages resulting in the
    formation of nonbridging oxygen species. Pressure effects on the spectra are reversed by annealing the glasses at their respective glass transition temperatures.

    DOI： 10.1021/acs.jpclett.3c00540

  • Synthesis of transparent polycrystalline jadeite under high pressure and temperature Reviewed

    Mitsu K., Irifune T., Ohfuji H., Yamada A.

    Journal of Mineralogical and Petrological Sciences   116 ( 4 )   203 - 210   2021.1

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Journal of Mineralogical and Petrological Sciences  

    Attempts to synthesize transparent polycrystalline jadeite have been made by direct conversion from bulk glass at pressures 10–20 GPa and temperatures 900–1300 °C using Kawai–type multianvil apparatus. The grain size of jadeite tends to decrease with increasing pressure, but we failed to synthesize polycrystalline jadeite with grain sizes in nano–regime (<100 nm) and obtained the sample with the smallest average grain size of ~ 240 nm at 20 GPa and 1300 °C for 20 min. Polycrystalline jadeite of the minimum grain size exhibits high optical transparency with a transmittance of ~ 70% for a typical wavelength in the visible region. The highest Vickers hardness (Hv) of 14.2 GPa was observed for the polycrystalline jadeite sample with the minimum grain size of ~240 nm, which is about 7% higher than the hardness (Hv = 13.3 GPa) of the sample with the largest grain size of ~ 390 nm. Further increases in optical transparency and hardness of polycrystalline jadeite would be realized if we get nano–polycrystalline samples by optimizing pressure, temperature, heating duration, etc. of the ultrahigh–pressure synthesis experiment.

    DOI： 10.2465/JMPS.210319

    Scopus

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  • Transition in deformation mechanism of aluminosilicate glass at high pressure and room temperature Reviewed

    Osada K., Yamada A., Ohuchi T., Yoshida S., Matsuoka J.

    Journal of the American Ceramic Society   103 ( 12 )   6755 - 6763   2020.12

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Journal of the American Ceramic Society  

    Deformation experiments for 20(MgO or Na O)-20Al O -60SiO glasses were performed in simple shear geometry at 1.5-5 GPa and room temperature. An abrupt change in the thinning rate and the turning of the birefringence azimuth at a shear strain of γ = 1-2 indicate a transition of deformation mechanism from uniaxial compression aided by densification to shear flow in the glasses. The high-dense magnesium aluminosilicate glass showed strain softening controlled by the rearrangement of the tetrahedral network. On the other hand, low-dense sodium aluminosilicate glass deformed by packing-induced flow associated with densification and via the rearrangement of the tetrahedral network at lower and higher strains, respectively. The transition of the deformation mechanism was triggered by the limitations of the densification of the tetrahedral network. The difference of deformation mechanism brought about higher strain in magnesium aluminosilicate glass than sodium aluminosilicate glass at the same stress condition. Easiness of remarkable deformation, which relaxed residual stress, and high deformability contributed to the high ductility of the MgO-aluminosilicate glass. 2 2 3 2

    DOI： 10.1111/jace.17429

    Scopus

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  • Pressure-induced variation of persistent luminescence characteristics in Y3Al5-xGaxO12:Ce3+–M3+ (M = Yb, and Cr) phosphors: opposite trend of trap depth for 4f and 3d metal ions Reviewed International journal

    Jumpei Ueda, Masaya Harada, Shun Miyano, Akihiro Yamada and Setsuhisa Tanabe

    Physical Chemistry Chemical Physics   22   19502 - 19511   2020.8

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry   Participation form：Joint(The vice charge)  

    DOI： 10.1039/d0cp03520c

  • Thermoelastic properties of K0.7Na0.3AlSi3O8 hollandite and NaAlSi2O6 jadeite: Implication for the fate of the subducted continental crust in the deep mantle Reviewed

    Gréaux S., Zhou Y., Kono Y., Yamada A., Higo Y., Irifune T.

    Minerals   10 ( 3 )   2020.3

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Minerals  

    © 2020 by the authors. Licensee MDPI, Basel, Switzerland. The thermoelastic properties of K0.7Na0.3AlSi3O8 hollandite and NaAlSi2O6 jadeite, synthesized from a (K, Na)-felspar (microcline), were investigated by a combination of in situ energy dispersive synchrotron X-ray radiation and multi-anvil techniques at high pressure (P) and temperature (T) up to 21 GPa and 1700 K. The second-order phase transformation was found to occur in hollandite at ~16 GPa from tetragonal I/4m (hollandite-I) to monoclinic I2/m (hollandite-II), which confirms the previous report that the incorporation of Na in the hollandite structure decreases the transformation pressure. Fitting the pressure–volume–temperature data to the Birch–Murnaghan equation of state yielded estimates of the thermoelastic parameters for jadeite as well as the K0.7Na0.3AlSi3O8 hollandite-I and-II phases, which indicate that the incorporation of Na is likely to decrease the bulk moduli of both hollandite phases. The obtained thermoelastic parameters were combined with those of other mantle minerals reported previously to estimate the density of continental materials along an average mantle geotherm. Based on our results, continental crust and sediment become, respectively, 11% and 15% denser than the pyrolitic mantle at pressure >10 GPa, suggesting that once pulled down to the critical depth of ~300 km, the continental portions of the slab can subduct further into the deep mantle, down to the lowermost part of the mantle transition region.

    DOI： 10.3390/min10030261

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  • In-situ Raman measurements of Silicate glasses dring Vickers Indentation Reviewed International journal

    S. Yoshida, T.H. Nguyen, A. Yamada, J. Matsuoka

    Materials Transactions   2019.8

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    Language：English   Publishing type：Research paper (scientific journal)   Participation form：Joint(The vice charge)  

    DOI： doi.org/10.2320/matertrans.MD201901

  • Micro-Photoelastic Evaluation of Indentation-Induced Stress in Glass Reviewed International journal

    K. Asai, S. Yoshida, A. Yamada, J. Matsuoka, A. Errapart, Charles R. Kurkjian

    Materials Transactions   2019.1

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    Language：English   Publishing type：Research paper (scientific journal)   Participation form：Joint(The vice charge)  

    DOI： doi.org/10.2320/matertrans.MD201903

  • Sound velocity of CaSiO3 perovskite suggests the presence of basaltic crust in the Earth’s lower mantle Reviewed International journal

    Steeve Gréaux, Tetsuo Irifune, Yuji Higo, Yoshinori Tange, Takeshi Arimoto, Zhaodong Liu, Akihiro Yamada

    Nature   565   218 - 221   2019.1

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Nature   Participation form：Joint(The vice charge)  

    DOI： 10.1038/s41586-018-0816-5

  • Density variations of Cr-rich garnets in the upper mantle inferred from the elasticity of uvarovite garnet Reviewed International journal

    Steeve Greaux, Akihiro Yamada

    Comptes Rendus Geoscience   351   95 - 103   2018.12

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    The thermoelastic parameters of Ca3Cr2Si3O12 uvarovite garnet were examined in situ at high pressure up to 13 GPa and high temperature up to 1100 K by synchrotron radiation energy-dispersive X-ray diffraction within a 6-6-type multi-anvil press apparatus.

    DOI： 10.1016/j.crte.2018.09.012

  • In-situ observation of the structural change in MgO-B2O3-SiO2 glass at high pressure and the permanent structural change Reviewed

    Yamada A., Harada M., Masuno A., Yamanaka K., Higo Y., Yoshida S., Ohta T., Matsuoka J.

    Journal of Non-Crystalline Solids   499   25 - 31   2018.11

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Journal of Non-Crystalline Solids  

    © 2018 Elsevier B.V. A 41.6MgO-27.1B2O3-31.2SiO2 glass was synthesized by container-less levitation method. B K-edge X-ray absorption near edge structure (XANES) spectroscopy was used to quantify the coordination of boron in the as-made glass, resulting in ~72% of boron in 3-fold coordination. Raman spectroscopy indicated that the glass structure includes depolymerized borate units, which are pyroborate (B2O54−) and ring and/or chain-type metaborate (B3O63−, (BO2O−)∞) groups. The structural changes in the glass under hydrostatic condition were investigated by high-pressure Raman spectroscopy within a diamond anvil cell at pressures up to 8.5 GPa. On the borate structure, metaborate groups decreased with pressure. In contrast, triborate groups, which include tetrahedrally coordinated boron and have a fully polymerized borate network, increased; suggesting that the coordination transformation of B and polymerization were induced via compression. However, the modification of the borate structure units seems to be reversible at least up to 8.5 GPa. As for the silicate network, Q0 and Q1 structures were responsible to compression. Specifically, Q0 could be replaced by Q1 with elevating pressure, which means that the silicate network becomes polymerized with pressure. Whereas, structure of glass samples recovered from the pressure higher than 5 GPa displayed depolymerized silicate network, as dissociation of Q2 to Q1. The observed structural changes in the silicate network implied a partial change of the coordination number of Si4+ ions, which can be enhanced by the presence of a modifier cation with high field strength such as Mg2+.

    DOI： 10.1016/j.jnoncrysol.2018.07.002

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  • Evaluation of Sinking-In and Cracking Behavior of Soda-Lime Glass under Varying Angle of Trigonal Pyramid Indenter

    Satoshi Yoshida, Ken Wada, Takahiro Fujimura, Akihiro Yamada, Mitsuo Kato, Jun Matsuoka, Naohiro Soga

    Frontiers in Materials   2016.12

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.3389/fmats.2016.00054

  • Direct observation of indentation deformation and cracking of silicate glasses

    Satoshi Yoshida, Mitsuo Kato, Akiko Yokota, Shohei Sasaki, Akihiro Yamada, Jun Matsuoka, Naohiro Soga, Charles R. Kurkjian

    Journal of Materials Research   2015.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    <jats:title>Abstract</jats:title><jats:p><jats:fig position="anchor"><jats:graphic xmlns:xlink="http://www.w3.org/1999/xlink" orientation="portrait" mime-subtype="gif" mimetype="image" position="float" xlink:type="simple" xlink:href="S0884291415002149_figAb" /></jats:fig></jats:p>

    DOI： 10.1557/jmr.2015.214

  • Design and performance of high-pressure PLANET beamline at pulsed neutron source at J-PARC Reviewed

    T. Hattori, A. Sano-Furukawa, H. Arima, K. Komatsu, A. Yamada, Y. Inamura, T. Nakatani, Y. Seto, T. Nagai, W. Utsumi, T. Iitaka, H. Kagi, Y. Katayama, T. Inoue, T. Otomo, K. Suzuya, T. Kamiyama, M. Arai, T. Yagi

    Nuclear Instruments and Methods in Physics Research A   ( 780 )   55 - 67   2015.1

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER   Participation form：Joint(The vice charge)  

    DOI： 10.1016/j.nima.2015.01.059

  • Six-axis multi-anvil press for high-pressure, high-temperature neutron diffraction experiments Reviewed

    • Sano-Furukawa, T. Hattori, H. Arima, A. Yamada, S. Tanabe, M. Kondo, A. Nakoamura, H. Kagi and T. Yagi

    Review of Scientific Instruments   85   113905 - 113905   2014.11

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing   Participation form：Joint(The vice charge)  

    DOI： 10.1063/1.4901095

  • Equation of state and phase transition of antigorite under high pressure and high temperature

    Cuiping Yang, Toru Inoue, Akihiro Yamada, Takumi Kikegawa, Jun-ichi Ando

    Physics of the Earth and Planetary Interiors   2014.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.pepi.2013.07.008

  • P–V–T equation of state of Mn3Al2Si3O12 spessartine garnet Reviewed

    S. Gréaux and A. Yamada

    Physics and Chemistry of Minerals   41 ( 2 )   141 - 149   2013

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Splinger   Participation form：Joint(The vice charge)  

    DOI： 10.1007/s00269-013-0632-2

  • Equation of state and phase transition of antigorite under high pressure and high temperature Reviewed

    C. Yang, T. Inoue, A. Yamada, T. Kikegawa, J. Ando

    Physics of Earth and Planetary Interiors   228   56 - 62   2013

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    Language：English   Publishing type：Research paper (scientific journal)   Participation form：Joint(The vice charge)  

  • Pressure-induced structural change of hydrous enstatite and forsterite melt Reviewed

    A. Yamada, T. Inoue, S. Urakawa, K. Funakoshi, N. Funamori, T. Kikegawa and T. Irifune

    Earth and Planetary Science Letters   308   115 - 123   2011

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER   Participation form：Joint(The main charge)  

  • Combined ultrasonic elastic wave velocity and microtomography measurements at high pressures Reviewed

    Y. Kono, A. Yamada, Y. Wang, T. Yu, and T. Inoue

    Review of Scientific Instruments   82   023906   2011

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Institute of Physics   Participation form：Joint(The vice charge)  

  • High-pressure x-ray diffraction studies on the structure of liquid silicate using a Paris–Edinburgh type large volume press Reviewed

    A. Yamada, Y. Wang, T. Inoue, W. Yang, C. Park, T. Yu and G. Shen

    Review of Scientific Instruments   82   015103   2011

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Institute of Physics   Participation form：Joint(The main charge)  

  • Densification of MgSiO3 glass with pressure and temperature Reviewed

    A. Yamada, S. J. Gaudio, C. E. Lesher

    Journal of Physics: Conference Series   215   012085   2010

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP publishing   Participation form：Joint(The main charge)  

  • The effect of water on the high-pressure phase boundaries in the system Mg2SiO4-Fe2SiO4 Reviewed

    T. Inoue, T. Ueda, Y. Tanimoto, A. Yamada and T. Irifune

    Journal of Physics: Conference Series   215   012101   2010

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP publishing   Participation form：Joint(The vice charge)  

  • Time-resolved X-ray diffraction analysis of the experimental dehydration of serpentine at high pressure Reviewed

    Inoue, T., I. Yoshimi, A. Yamada and T. Kikegawa

    Journal of Mineralogical and Petrogical Sciences   104   105 - 109   2009

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japan Mineralogical Society Journal of Mineralogical and Petrological Sciences   Participation form：Joint(The vice charge)  

  • Polyamorphism in Tin Tetraiodide Reviewed

    Fuchizaki, K., T. Hase, A. Yamada, Y. Katayama and K. Funakoshi

    Journal of Chemical Physics   130   121101   2009

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Institute of Physics   Participation form：Joint(The vice charge)  

  • Exploratory study of the new B-doped diamond heater at high pressure and temperature and its application to in situ XRD experiments on hydrous Mg-silicate melt Reviewed

    A. Yamada, T. Irifune, H. Sumiya, Y. Higo, T. Inoue, and K. Funakoshi

    High Pressure Research   28   255 - 264   2008

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Taylor & Francis   Participation form：Joint(The main charge)  

  • Elastic wave velocities and Raman shift of MORB glass at high pressure Reviewed

    Kono, Y., H. Ohfuji, Y. Higo, A. Yamada, T. Inoue, T. Irifune and K. Funakoshi

    Journal of Mineralogical and Petrogical Sciences   103   2008

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japan Mineralogical Society Journal of Mineralogical and Petrological Sciences   Participation form：Joint(The vice charge)  

    DOI： 10.2465/jmps.071022c.

  • In situ strength measurements on natural upper mantle Reviewed

    Yamamoto, J., J. Ando, H. Kagi, T. Inoue, A. Yamada, D. Yamazaki and T. Irifune

    Physics and Chemistry of Minerals   35   249 - 257   2008

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Splinger   Participation form：Joint(The vice charge)  

  • In-situ X-ray experiment on the structure of hydrous Mg-silicate melt under high pressure and high temperature Reviewed

    A. Yamada, T. Inoue, S. Urakawa, K. Funakoshi, N. Funamori, T. Kikegawa, H. Ohfuji and T. Irifune

    Geophysical Research Letters   34   L10303   2007

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union   Participation form：Joint(The main charge)  

    DOI： 10.1029/2006GL028823

  • The Phase boundary between CaSiO3 perovskite and Ca2SiO4 + CaSi2O5 determined by in situ X-ray observations Reviewed

    Sueda, Y., T. Irifune, A. Yamada, T. Inoue, X. Liu and K. Funakoshi

    Geophysical Research Letters   33   L10307   2006

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  • In situ high-pressure and high-temperature studies on the stability and equation of state of superhydrous phase B Invited Reviewed

    Inoue, T., T. Ueda, Y. Higo, A. Yamada, T. Irifune and K. Funakoshi

    Earth's deep water cycle, Geophysical monograph series 168   147 - 157   2006

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Geophysical Union   Participation form：Joint(The main charge)  

  • Melting of enstatite from 13 to 18 GPa under hydrous condition Reviewed

    A. Yamada, T. Inoue and T. Irifune

    Physics of Earth and Planetary Interiors   147   45 - 56   2004

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER   Participation form：Joint(The main charge)  

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Research Projects

  • ガラスおよびガラスセラミックスの高機能化に向けた高温高圧発生技術の開発

    Grant number：23K04893  2023.4 - 2026.3

    日本学術振興会  科学研究費助成事業  基盤研究(C)

    山田 明寛

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    Grant amount：\4680000 （ Direct Cost: \3600000 、 Indirect Cost：\1080000 ）

    ガラスの高温高圧処理はその高密度化に伴い高硬度化・高屈折率化・低分散化など、さまざまな物性の向上をもたらす。また、負荷する応力を制御することで等方性材料だけではなく、異方性をもつ材料も合成することができる。ガラス構造は負荷する応力によって徐々に変化するため、負荷応力の拡大はより優れた物性を有するガラス材料の合成に繋がる。
    本年度は既設の準一軸型加圧であるパリーエジンバラ型加圧方式を用いて、高温高圧処理による異方性ホウケイ酸塩ガラスの合成に取り組んだ。得られたガラスについて、放射光X線を用いて、その異方構造を明らかにした。さらに、高温高圧X線回折実験により高温高圧下でのガラスの高密度化に伴う構造変化をその場観察した。これらの実験と並行して、新たに導入するDIA型加圧モジュールの設計についてより詳細な点まで検討を行い、次年度の導入に向けて最終調整を行なった。

  • Structure and properties of the core-mantle materials

    Grant number：15H05828  2015.6 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Suzuki Akio

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    Grant amount：\186550000 （ Direct Cost: \143500000 、 Indirect Cost：\43050000 ）

    We investigated the structure and properties of deep-Earth materials. We developed experimental techniques in collaboration with the A01-3 Group, using high pressure-temperature ultrasonic methods to measure the elastic wave velocities of hydrous and non-hydrous phases in the Earth's mantle. Moreover, we measured the velocities of silicate glasses, magmas, and metallic liquids under high pressure and temperature to study the heterogeneous structure of the Earth's deep interior. We conducted melting experiments on mantle materials under high pressure, and developed a model that attribute the chemical heterogeneity of the mantle to the transportation of ultrabasic magmas. Through the investigation of the solubility of nitrogen in silicate minerals at high pressure, we revealed that stishovite contains higher amounts of nitrogen compared to other minerals. Based on these experimental results, we proposed a new model for stishovite-transported nitrogen in the Earth's mantle and core.

  • Structure of hydrous magma and the state of water under high-pressure condition

    Grant number：25400517  2013.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Yamada Akihiro

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    Grant amount：\4940000 （ Direct Cost: \3800000 、 Indirect Cost：\1140000 ）

    The technical development for the high-pressure neutron diffraction on hydrous magma at J-PARC, where the most intense neutron beam is available in the world, has been performed. In addition, high-energy X-ray diffraction on the hydrous and anhydrous NaAlSi3O8 glasses, which can give compensatory information obtained from neutron diffraction, has been taken at BL04B2 in SPring-8.

  • Structural investigation of hydrous silicate melts with high-pressure neutron diffraction and the technical developments

    Grant number：23740395  2011 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (B)

    YAMADA Akihiro

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    Grant amount：\4420000 （ Direct Cost: \3400000 、 Indirect Cost：\1020000 ）

    The technical developments for the high-pressure neutron diffraction, which is performed with 6-rams large-volume press installed at BL11 (PLANET) in J-PARC, have been pursued in the present project. The fundamental technique has been established and the preliminary data on some hydrous silicate glasses were taken successfully under high-pressure conditions.

  • Physical property and structure of magma under high pressure, and the effect of water

    Grant number：20103003  2008 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    INOUE Toru, URAKAWA Satoru, URAKAWA Satoru, SUZUKI Akio, MIBE Kenji, KAWAMOTO Tatsuhiko, ARIMA Hiroshi, KAWAMOTO Tatsuhiko, FUNAKOSHI Ken-ichi, FUNAMORI Nobumasa, TERASAKI Hidenori, NAKAMURA Michihiko, YAMADA Akihiro

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    Grant amount：\97890000 （ Direct Cost: \75300000 、 Indirect Cost：\22590000 ）

    We have developed the cell assembly for high temperature high-pressure neutron experiment and also installed a neutron camera with various examinations together with construction of the high temperature high-pressure neutron beamline in J-PARC. In addition, we have performed experimental studies about the effect of water and the structure and the physical properties of magma generated in the Earth interior by in-situ synchrotron X-ray observation and quench experiment under high temperature and high pressure. The high temperature and high-pressure neutron experiment was enabled by this project research, and new knowledge, such as structure of magma, density, and viscosity, was acquired.

  • The behavior and distribution of water and carbon dioxide in the Earth's interior

    Grant number：20244086  2008 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    INOUE Toru, NISHIYAMA Norimasa, OHFUJI Hiroaki, MATSUKAGE Kyoko, KONO Yoshio, YAMADA Akihiro, HIGO Yuji

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    Grant amount：\44330000 （ Direct Cost: \34100000 、 Indirect Cost：\10230000 ）

    Distribution of water in the Earth’s interiors and the effect of water for phase transition boundaries were clarified, and the water content in the Earth’s interior s was estimated by combining with the seismic data. Moreover, the studies for the dehydration reaction and the equation of state of the slab constituent minerals, and also the study for the effect of water to the mantle mineralogy were carried out. In addition, the study of the compositional dependence for the water content in mantle minerals was carried out. We also tried to determine the water content of magma as a function of pressure and temperature.

  • 放射光X線回折と中性子回折を用いた高圧下における含水珪酸塩融体の構造の解明

    Grant number：04J02835  2005.4 - 2007.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    山田 明寛

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    Grant amount：\2800000 （ Direct Cost: \2800000 ）

    MgO-SiO_2系において、含水マントルの浅部において生成されるマグマの組成はSiO_2成分に富むことが久城らによって明らかにされた。しかし、この現象は、上部マントル最下部に至る条件(約10GPaに相当)までで、更に高圧では生成されるマグマの組成はまったく逆のMgO成分に富むことが明らかになった。本研究では、上述のような高圧含水マグマの熔融様式の変化に伴う構造の変化を、原子レベルの微視的観点から実験的に明らかにすることを目的としている。
    高温高圧実験は、KEKのAR-NE5Cビームライン設置のMAX80、及び大型放射光施設SPring-8のBLO4B1ビームライン設置のSPEED1500の2つのマルチアンビル型高圧発生装置を使用して行った。高圧状態の含水マグマのX線回折測定は、白色の放射光X線を用いてエネルギー分散法により行った。
    今年度は、14.9GPaまでの圧力領域でMg含有量を変えた含水珪酸塩メルトのデータ収集を行った。珪酸塩メルトのX線回折強度曲線の第一ピーク(First Sharp Diffraction Peak : FSDP)は、SiO_4四面体からなるネットワーク構造を反映したピークと考えられており、それらのピークシフトは無水のMgSiO_3メルト(Funamori et al.,2004)とのものと大きく異なり、全ての組成において2-3GPa付近で特徴的な屈曲をもつことがわかった。この屈曲とはつまり、低圧領域における急激な短距離化、高圧領域における長距離化のことを意味している。この含水珪酸塩マグマのネットワーク構造の圧力変化の解釈として、2GPa以下の圧力領域では水の効果(siOHの形成)によってネットワーク構造が分断されFSDPの位置は短距離側へ大きく位置していたと考えられる。一方2-3GPa付近から生じる長距離側へのシフトは水がMg(OH)の形でメルトに溶け込むようになるために珪酸塩のネットワーク構造が卓越し始めたと考えることができる。このような水の特性変化は、これまで高圧実験によって調べられてきた含水高圧条件で生成されるMgO成分に富むマグマ生成機構と密接な関係を持っている可能性が高い。

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Presentations

  • Change in elasticity of alumino-borosilicate at high-pressure

    Akihiro Yamada, Kaori Mitsunaga, Takaharu Nishikawa, Yuji Higo, Satoshi Yoshida, Jun Matsuoka

    The 17th International Conference on the Physics of Non-Crystalline Solids  2025.8 

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    Event date： 2025.8

    Language：English   Presentation type：Oral presentation (general)  

  • Structural Aspects of Ambient-Temperature Densification of Highly Crack-Resistant Borosilicate and Aluminoborosilicate Glasses: Two Case Studies Examined by Solid-State NMR International coauthorship International conference

    Yoshinari Kato, Yara Hellen Firmo Gomes, Millena Logrado, Tomiki Inoue1, Shingo Nakane, Hiroki Yamazaki, Akihiro Yamada, and Hellmut Eckert

    27th International Congress on Glass 2025  2025.1  NTERNATIONAL COMMISSION ON GLASS

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    Event date： 2025.1

    Language：English  

    Venue：Kolkata   Country：India  

  • 高圧下における ナトリウムアルミノケイ酸塩ガラスの 密度変化とその機構

    山田明寛，的場雄貴, 宮崎慧一郎，松元路仁，西脇瑞紀，松岡 純

    第65回高圧討論会   2024.11  日本高圧力学会

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    Event date： 2024.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：盛岡   Country：Japan  

  • 封圧下におけるカルシウムアルミノケイ酸塩ガラスのせん断変形

    山田明寛，横関輝也，大内智博，尾原幸治，肥後祐司，辻野典秀，西脇瑞紀，松岡 純

    第65回ガラスおよびフォトニクス材料討論会  2024.11  日本セラミックス協会ガラス部会

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    Event date： 2024.11

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：福岡   Country：Japan  

  • ナトリウムホウ酸塩ガラスのガラス転移温度付近における熱伝導

    井下和輝, 山田明寛, 西脇瑞紀, 松岡純

    第65回ガラスおよびフォトニクス材料討論会  2024.11 

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    Event date： 2024.11

    Language：Japanese   Presentation type：Poster presentation  

  • 差応力下での熱緩和による異方性ホウケイ酸塩ガラスの形成機構

    谷口真梧, 山田明寛, 大内智博, 尾原幸治, 柴田大輔, 西脇瑞紀, 松岡 純

    第65回ガラスおよびフォトニクス材料討論会  2024.11 

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    Event date： 2024.11

    Language：Japanese   Presentation type：Poster presentation  

  • V2Ox-B2O3ガラス融液の電気伝導

    加藤 晴香, 林 優樹, 山田 明寛, 山本 茂, 西脇 瑞紀, 松岡 純

    第65回ガラスおよびフォトニクス材料討論会  2024.11 

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    Event date： 2024.11

    Language：Japanese   Presentation type：Poster presentation  

  • Na2O-K2O-Al2O3-SiO2系ガラスの静水圧応力に対する弾性回復

    薮崎航太, 山田明寛, 西脇瑞紀, 松岡 純

    第65回ガラスおよびフォトニクス材料討論会  2024.11 

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    Event date： 2024.11

    Language：Japanese   Presentation type：Poster presentation  

  • Shear deformation of aluminosilicate glass under pressurized condition Invited International conference

    Akihiro Yamada

    2024.10  AGC Inc.

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    Event date： 2024.10

    Language：English   Presentation type：Oral presentation (invited, special)  

    Venue：Tokyo   Country：Japan  

  • 高温高圧下で見るガラス

    山田明寛

    日本セラミックス協会 第55回ガラス部会夏季若手セミナー  2024.9 

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    Event date： 2024.9

    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

  • Anisotropy and the structural modification in sodium borosilicate glass by high-pressure and high-temperature deformation

    Shingo Taniguchi, Akihiro Yamada, Tomohiro Ohuchi, Daisuke Shibata, Jun Matsuoka

    International Commission on Glass Annual Meeting 2024  2024.8 

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    Event date： 2024.8

    Language：English   Presentation type：Poster presentation  

  • Raman spectroscopy investigation of plastically-deformed alkaline-earth aluminoborosilicate glasses International coauthorship International conference

    G.A. Rosales-Sosa, Y. Kato, S. Nakane, M. Bourguignon, E. Barthel, A. Yamada, H. Yamazaki

    2024 Glass & Optical Materials Division Annual Meeting  2024.5  The American Ceramic Society

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    Event date： 2024.5

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Las Vegas   Country：United States  

  • シリカガラスのせん断変形

    山田 明寛, 桂川 晴名, 大内 智博, 肥後 祐司, 松岡 純

    第64回ガラスおよびフォトニクス材料討論会  2023.11 

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    Event date： 2023.11

    Language：Japanese   Presentation type：Oral presentation (general)  

  • In-situ observation of the structure and physical properties in aluminosilicate glass Invited

    Akihiro Yamada

    International Commission on Glass Annual Meeting 2023  2023.11 

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    Event date： 2023.11

    Language：English   Presentation type：Oral presentation (invited, special)  

  • 超高圧下での熱処理によるホウケイ酸塩ガラスの構造変化

    山田明寛, 朝見遼太, 入澤明典, 柴田大輔, 松岡 純

    第64回高圧討論会  2023.11 

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    Event date： 2023.11

    Language：Japanese   Presentation type：Oral presentation (general)  

  • ホウケイ酸塩ガラスの異方性の発現と網目構造の変化

    谷口 真梧, 山田 明寛, 柴田 大輔, 松岡純

    日本セラミックス協会第36回秋季シンポジウム  2023.9 

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    Event date： 2023.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • In-situ observation of shear deformation of oxide glasses at high pressure Invited

    Akihiro Yamada, Goki Kato, Haruna Katsuragawa, Jun Matsuoka, Tomohiro Ohuchi, Yuji Higo

    9th International Discussion Meeting on Relaxations in Complex Systems  2023.8 

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    Event date： 2023.8

    Language：English   Presentation type：Oral presentation (invited, special)  

  • 室温高圧下における アルミノケイ酸塩ガラスの変形機構

    山田明寛, 長田康生, 吉田 智, 松岡 純

    第63回高圧討論会  2022.12 

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    Event date： 2022.12

    Language：Japanese   Presentation type：Oral presentation (general)  

  • ソーダ石灰ガラスの静水圧下における弾性と構造変化

    山田明寛, 宮崎慧一郎, 肥後祐司, 松岡 純

    第63回ガラスおよびフォトニクス材料討論会  2022.12 

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    Event date： 2022.12

    Language：Japanese   Presentation type：Oral presentation (general)  

  • ホウケイ酸塩ガラスのせん断変形のその場観察

    加藤 豪起, 山田 明寛, 大内 智博, 松岡 純

    第63回ガラスおよびフォトニクス材料討論会  2022.12 

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    Event date： 2022.12

    Language：Japanese   Presentation type：Poster presentation  

  • 無容器法によって合成された Mg ホウケイ酸塩ガラスの 機械特性と構造

    山田明寛, 夏原佳奈, 湯地真大, 増野敦信, 山岸弘奈, 肥後祐司, 吉田 智, 松岡 純

    第62回ガラスおよびフォトニクス材料討論会  2021.11 

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    Event date： 2021.11

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 静水圧下におけるアルミノホウケイ酸塩ガラスの弾性変化

    山田明寛, 光永佳織, 西川貴晴, 肥後祐司, 吉田 智, 松岡 純

    第62回高圧討論会  2021.10 

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    Event date： 2021.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  • CaSiO3ガラスの高密度化に伴う構造−物性変化

    山田 明寛, 信氏 周知, 松岡 純, Steeve Gréaux, 肥後祐司

    日本セラミックス協会第34回秋季シンポジウム  2021.9 

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    Event date： 2021.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • ナトリウムホウケイ酸塩ガラスの封圧下におけるせん断変形

    加藤豪起, 山田明寛, 松岡純, 大内智博

    日本セラミックス協会第34回秋季シンポジウム  2021.9 

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    Event date： 2021.9

    Language：Japanese   Presentation type：Poster presentation  

  • ガラス中のホウ素配位数と物性への影響 Invited

    山田明寛

    2019, 2020年度立命館大学SRセンター研究成果報告会  2021.6 

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    Event date： 2021.6

    Language：Japanese   Presentation type：Symposium, workshop panel (nominated)  

  • 高温高圧下におけるjadeite ガラスの弾性波速度変化とナノ多結晶化過程

    満圭祐, 河野義生, Steeve GREAUX, 桑原秀治, 入舩徹男, 肥後祐司, 山田明寛

    第61回高圧討論会  2020.12 

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    Event date： 2020.12

    Language：Japanese   Presentation type：Poster presentation  

  • 異方性を有するホウケイ酸塩ガラスの合成とその構造

    橋本凌冶, 山田明寛, 山岸弘奈, 吉田智, 松岡純

    日本セラミックス協会2020年年会  2020.3 

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    Event date： 2020.3

    Language：Japanese   Presentation type：Poster presentation  

  • 室温下でのアルミノケイ酸塩ガラスの流動挙動

    長田康生, 山田明寛, 大内智博, 吉村真史, 吉田 智, 松岡 純

    第60回ガラスおよびフォトニクス材料討論会  2019.12 

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    Event date： 2019.12

    Language：Japanese   Presentation type：Oral presentation (general)  

  • 高温高圧処理による異方性ホウケイ酸塩ガラスの合成

    山田明寛, 梶山南帆, 橋本凌冶, 長田康生, 山岸弘奈, 肥後祐司, 吉田 智, 松岡 純

    第60回ガラスおよびフォトニクス材料討論会  2019.12 

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    Event date： 2019.12

    Language：Japanese   Presentation type：Oral presentation (general)  

  • アルミノホウケイ酸塩ガラスの高圧下での音速測定

    西川貴晴, 山田明寛, 光永佳織, 肥後祐司, 吉田 智, 松岡 純

    第60回ガラスおよびフォトニクス材料討論会  2019.12 

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    Event date： 2019.12

    Language：Japanese   Presentation type：Poster presentation  

  • ホウ珪酸塩ガラスの高温圧縮による種々の物性への影響

    山田明寛, 高味拓永, 大内智博, 肥後祐司, 山中恵介, 吉田 智, 松岡 純

    第60回高圧討論会  2019.10 

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    Event date： 2019.10

    Language：Japanese   Presentation type：Oral presentation (general)  

  • Shear-induced deformation and the structural change in aluminosilicate glasses at room-temperature condition

    Osada, Kosei, Yamada, Akihiro, Yoshimura, Masashi, Yoshida, Satoshi, Matsuoka, Jun

    25th International Congress on Glass (ICG2019)  2019.6 

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    Event date： 2019.6

    Language：English   Presentation type：Poster presentation  

  • ホウケイ酸塩ガラスの高温圧縮による種々 の物性への影響

    山田明寛

    （一社）ニューガラスフォーラム 2019年度第2回ニューガラスセミナー  2019.11 

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    Language：Japanese   Presentation type：Public lecture, seminar, tutorial, course, or other speech  

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Teaching Experience

  • セラミックス材料

    Institution：滋賀県立大学

  • 材料計算化学および同演習

    Institution：滋賀県立大学

  • 材料強度物性

    Institution：滋賀県立大学

  • 材料科学実験Ⅱ

    Institution：滋賀県立大学

  • 材料科学実験Ⅰ

    Institution：滋賀県立大学

  • 非晶質無機材料

    Institution：滋賀県立大学

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