Masaki Akaogi

Professor
Gakushuin University, Department of Chemistry

Switch to Japanese
Research areas: High-pressure mineral physics, Thermochemistry of minerals and inorganic materials

Adress: Department of Chemistry, Gakushuin University, 1-5-1 Mejiro, Toshima-ku, Tokyo 171-8588, Japan

Phone: +81-3-3986-0221(Ext. 6462)

Fax: +81-3-5992-1029

E-mail: masaki.akaogi@gakushuin.ac.jp
Research interests
High-pressure phase equilibria of silicates and related substances; thermodynamic properties of silicates and melts; development of high-pressure high-temperature techniques, development of high-temperature calorimetric techniques; applications to mineralogy of the Earthfs interior and to synthesis of novel inorganic materials.
Profile
1973 B.Sc., Department of Earth Sciences, Tohoku University
1975 M.S., Graduate School of Science, Geophysics, University of Tokyo
1978 Ph.D., Graduate School of Science, Geophysics, University of Tokyo
1979-1988 Research Associate, Department of Earth Sciences, Kanazawa University
1981-1982,1985 Postdoctoral Research Associate, Department of Chemistry, Arizona State University
1987 Visiting scientist, Department of Geological and Geophysical Sciences, Princeton University
1988-1990 Associate Professor, Department of Earth Sciences, Kanazawa University
1990-present Professor, Department of Chemistry, Gakushuin University
2003-2006 Chairman, Department of Chemistry, Gakushuin University
Award, Honor
1996 Mineralogical Society of Japan Award
1998 Mineralogical Society of America, Fellow
2010 Akaogiite, name for high-pressure mineral of TiO2 with the baddeleyite structure (IMA2007-058). El Goresy et al. (2010) Am. Mineral., 95, 892-895.
Professional Activities
1996-2010 Councilor, Mineralogical Society of Japan
2001 Chairman, Committee of the Mineralogical Society of Japan Award
2010 Chairman, Committee of the Watanabe Manjiro Award of the Japanese Association of Mineralogical Sciences
2001-2003, 2005-2007, 2009-2010 Councilor, The Japan Society of High Pressure Science and Technology

1998-2008 Vice-chairman of Working Group of Mineral Equilibria, the International Mineralogical Association (IMA)
2003-2006 Vice-chairman of scientific program committee, the 19th International Mineralogical Association
2006-2010 Member, the IMA medal committee of the International Mineralogical Association.

1997-2005 Editor, Physics and Chemistry of Minerals (Springer)
2005-present Editorial Advisory Board, Physics and Chemistry of Minerals (Springer)
2011 Guest editor, Pure and Applied Chemistry, vol. 88, no.6, 2011.

Member, International advisory committee of 2nd International symposium gThermodynamics in Natural Processesh, Novosibirsk, 1992.
Convener, Symposium gPhase transitions and thermodynamic properties of mineralsh at the 29th International Geological Congress (IGC), Kyoto, 1992.
Convener, Session gPhysical properties, structure and dynamics of the Earthfs interiorh at the 2000 Western Pacific Geophysics Meeting (WPGM), Tokyo, 2000.
Co-convener, Session gMineral crystal chemistry and phase transformations: experiment and computationh at the 18th IMA, Edinburgh, 2002.
Co-convener, a session at the Goldschmidt Conference, Kurashiki, 2003.
Convener, Session gPhase transitions and thermodynamic modeling of minerals and rocksh at the 19th IMA, Kobe, 2006.
Member, International advisory committee of the 13th IUPAC conference on High Temperature Materials Chemistry (HTMC), 2009, Davis.
List of Publications
  1. Akimoto, S., M. Akaogi, K. Kawada, and O. Nishizawa, Mineralogic distribution of iron in the upper half of the transition zone in the earth's mantle, In: G. H. Sutton, M. H. Manghnani, and R. Moberly (Eds.), The Geophysics of the Pacific Ocean Basin and Its Margin, Am. Geophys. Union, Geophys. Monogr., 19, 399-405, 1976.


  2. Aoki, K., K. Fujino, and M. Akaogi, Titanochondrodite and titanoclinohumite derived from the upper mantle in the BuellPark kimberlite, Arizona,U.S.A., Contrib. Mineral. Petrol., 56, 243-253, 1976.  Link


  3. Akaogi, M. and S. Akimoto, Pyroxene-garnet solid solution equilibria in the systems Mg4Si4O12-Mg3Al2Si3O12 and Fe4Si4O12-Fe3Al2Si3O12 at high pressures and temperatures, Phys. Earth Planet Interiors, 15, 90-106, 1977.  Link


  4. Sato, Y., M. Akaogi, and S. Akimoto, Hydrostatic compression of synthetic garnets pyrope and almandine, J. Geophys. Res., 83, 335-338, 1978.  Link


  5. Toriumi, K., M. Ozima, M. Akaogi, and Y. Saito, Electron-density distribution in crystals of CoAl2O4, Acta Crystallogr., B34, 1093-1096, 1978.  Link


  6. Akaogi, M. and S. Akimoto, High-pressure phase equilibria in a garnet lherzolite, with special reference to Mg2+-Fe2+ partitioning among constituent minerals, Phys. Earth Planet. Interiors, 19, 31-51, 1979.  Link


  7. Akaogi, M. and S. Akimoto, High-pressure stability of a dense hydrous magnesian silicate Mg23Si8O42H6 and some geophysical implications, J. Geophys. Res., 85, 6944-6948, 1980.  Link


  8. Akimoto, S. and M. Akaogi, The system Mg2SiO4-MgO-H2O at high pressures and temperatures - Possible hydrous magnesian silicates in the mantle transition zone - , Phys. Earth Planet. Interiors, 23, 268-275, 1980.  Link


  9. Horioka, K, K. Takahashi, N. Morimoto, H. Horiuchi, M. Akaogi, and S. Akimoto, Structutre of nickel aluminosilicate (phaseIV): a high-pressure phase related to spinel, Acta Crystallogr., B37, 635-638, 1981.  Link


  10. Syono, Y., H. Yamauchi, A. Ito, Y. Someya, E. Ito, Y. Matsui, M. Akaogi, and S. Akimoto, Magnetic properties of the disordered ilmenite FeTiO3 II synthesized at very high pressures, In: H.Watanabe, S. Iida, and M. Sugimoto (Editors), Ferrites, Center Acad. Publ. Japan, pp.192-195, 1981.


  11. Horiuchi, H., M. Akaogi, and H. Sawamoto, Crystal structure studies on spinel-related phases, spinelloids: implications to olivine- spinel phase transformation and systematics, In: S. Akimoto and M. H. Manghnani (Eds.), High-Pressure Research in Geophysics, Center Acad. Publ. Japan, pp.391-403, 1982.


  12. Akaogi, M., S. Akimoto, K. Horioka, K. Takahashi, and H. Horiuchi, The system NiAl2O4-Ni2SiO4 at high pressures and temperatures: spinelloids with spinel-related structures, J. Solid State Chem., 44, 257-267, 1982.  Link


  13. Davies, P. K. and M. Akaogi, Phase intergrowths in spinelloids, Nature, 305, 788-790, 1983.  Link


  14. Akaogi, M., N. L. Ross, P. McMillan, and A. Navrotsky, The Mg2SiO4 polymorphs (olivine, modified spinel, and spinel) - Thermodynamic properties from oxide melt solution calorimetry, phase relations, and models of lattice vibrations, Am. Mineral., 69, 499-512, 1984.  Link


  15. Akaogi, M. and A. Navrotsky, Calorimetric study of the stability of spinelloids in the system NiAl2O4-Ni2SiO4, Phys. Chem. Minerals, 10, 166-172, 1984.  Link


  16. Akaogi, M. and A. Navrotsky, The quartz-coesite-stishovite transformations: new calorimetric measurements and calculation of phase diagrams, Phys. Earth Planet. Interiors, 36, 124-134, 1984.  Link


  17. Navrotsky, A. and M. Akaogi, The ƒ¿, ƒÀ, ƒÁ phase relations in Fe2SiO4-Mg2SiO4 and Co2SiO4-Mg2SiO4: calculation from thermochemical data and geophysical applications, J. Geophys. Res., 89, 10135-10140, 1984.  Link


  18. Akimoto, S. and M. Akaogi, Possible hydrous magnesian silicates in the mantle transition zone, In: I. Sunagawa (Editor), Materials Science of the Earth's Interior, Terra Sci. Publ.. pp.477-480, 1984.


  19. Akaogi, M. and A. Navrotsky, Calorimetric study of high-pressure polymorphs of MnSiO3, Phys. Chem. Minerals, 12, 317-323, 1985.  Link


  20. Susaki, J., M. Akaogi, S. Akimoto, and O. Shimomura, Garnet-perovskite transformation in CaGeO3: in-situ x-ray measurements using synchrotron radiation, Geophys. Res. Lett., 12, 729-732, 1985.  Link


  21. Akaogi, M. and S. Akimoto, Infrared spectra of high-pressure hydrous silicates in the system MgO-SiO2-H2O, Phys. Chem. Minerals, 13, 161-164, 1986.  Link


  22. Ross, N. L., M. Akaogi, A. Navrotsky, J. Susaki, and P. McMillan, Phase transitions among CaGeO3 polymorphs (wollastonite, garnet, and perovskite structures): studies by high pressure synthesis, high temperature calorimetry, and vibrational spectroscopy and calculation, J. Geophys. Res., 91, 4685-4696, 1986.  Link


  23. Williams, Q., R. Jeanloz, and M. Akaogi, Infrared vibrational spectra of beta-phase Mg2SiO4 and Co2SiO4 to pressures of 27 GPa, Phys. Chem. Minerals, 13, 141-145, 1986.  Link


  24. Matsui, M., M. Akaogi, and T. Matsumoto, Computationl model of the structural and elastic properties of the ilmenite and perovskite phases of MgSiO3, Phys. Chem. Minerals, 14, 101-106, 1987.  Link


  25. Akaogi, M. and A. Navrotsky, Calorimetric study of high-pressure phase transitions among the CdGeO3 polymorphs (pyroxenoid, garnet, ilmenite, and perovskite structures), Phys. Chem. Minerals, 14, 435-440, 1987.  Link


  26. Matsui, M., M. Akaogi, and T. Matsumoto, Computationl model of the structural and elastic properties of the high-pressure phases of MgSiO3 (garnet, ilmenite and perovskite) Acta Cryst., A43, C153, 1987.


  27. Yagi, T., M. Akaogi, O. Shimomura, T. Suzuki, and S. Akimoto, In situ observation of the olivine-spinel phase transformation in Fe2SiO4 using synchrotron radiation, J. Geophys. Res., 92, 6207-6213, 1987.  Link


  28. McMillan, P. and M. Akaogi, Raman spectra of ƒÀ-Mg2SiO4 (modified spinel) and ƒÁ-Mg2SiO4 (spinel), Am. Mineral., 72, 361-364, 1987.  Link


  29. Yagi, T., M. Akaogi, O. Shimomura, H. Tamai, and S. Akimoto, High-pressure and high-temperature equations of state of majorite, In: M. H. Manghnani and Y. Syono (Editors), High-Pressure Research in Mineral Physics, Amer. Geophys. Union, Geophys. Monogr., 39, pp.141-147, 1987.


  30. Akaogi, M., A. Navrotsky, T. Yagi, and S. Akimoto, Pyroxene-garnet transformation: thermochemistry and elasticity of garnet solid solutions, and application to a pyrolite mantle, In: M. H. Manghnani and Y. Syono (Editors), High-Pressure Research in Mineral Physics, Am. Geophys. Union, Geophys. Monogr., 39, pp.251-260, 1987.


  31. Akaogi, M., Calorimetry of silicate minerals, J. Mineral. Soc. Japan, 19, 31-41, 1987 (in Japanese with English abstract).


  32. McMillan, P., M. Akaogi, E. Ohtani, Q. Williams, R. Nieman, and R. Sato, Cation disorder in garnets along the Mg3Al2Si3O12-Mg4Si4O12 join: an infrared, Raman, and NMR study, Phys. Chem. Minerals, 16, 428-435, 1989.  Link


  33. Akaogi, M., E. Ito, and A. Navrotsky, The olivine-modified spinel-spinel transitions in the system Mg2SiO4-Fe2SiO4: calorimetric measurements, thermochemical calculation, and geophysical application, J. Geophys. Res., 94, 15671-15685, 1989.  Link


  34. Iiyama, J. T., K. Suzuki, M. Akaogi, T. Nishiyama, K. Fujimoto, and Y. Kato, Material transfer during metamorphic processes: experimental and theoretical studies, J. Mineral. Petrol. Econ. Geol., Spec. 4, 199-208, 1989 (in Japanese with English abstract).


  35. Akaogi, M., H. Yusa, E. Ito, T. Yagi, K. Suito, and J. T. Iiyama, The ZnSiO3 clinopyroxene-ilmenite transition: heat capacity, enthalpy of transition, and phase equilibria, Phys. Chem. Minerals, 17, 17-23, 1990.  Link


  36. Ito, E., M. Akaogi, L. Topor, and A. Navrotsky, Negative pressure-temperature slopes for reactions forming MgSiO3 perovskite from calorimetry, Science, 249, 1275-1278, 1990.  Link


  37. Iiyama, J. T., K. Suzuki, M. Akaogi, T. Nishiyama, K. Fujimoto, and Y. Kato, Material transfer during metamorphic processes: experimental approaches, In: F. Marumo (Editor), Dynamic Processes of Material Transport and Transformation in the Earth's Interior, Terra Sci. Publ., pp.119-137, 1990.


  38. Akaogi, M., Thermodynamics and stability relations of mantle minerals, In: F. Marumo (Editor), Dynamic Processes of Material Transport and Transformation in the Earth's Interior, Terra Sci. Publ., pp.239-251, 1990.


  39. Matsui, M. and M. Akaogi, Molecular dynamics simulation of the structural and physical properties of the four polymorphs of TiO2, Mole. Simulation, 6, 239-244, 1991.


  40. McMillan, P. F, M. Akaogi, R. K. Sato, B. Poe, and J. Foley, Hydroxyl groups in ƒÀ-Mg2SiO4, Am. Mineral., 76, 354-360, 1991.  Link


  41. Akaogi, M. and T. Yamazaki, Bridgman anvil with a sintered diamond core for phase transformation studies at high pressures and high temperatures, Proc. Japan Acad., 67, 61-65, 1991.


  42. Akaogi, M., K. Kusaba, J. Susaki, T. Yagi, M. Matsui, T. Kikegawa, H. Yusa, and E. Ito, High-pressure high-temperature stability of ƒ¿PbO2-type TiO2 and MgSiO3 majorite: calorimetric and in situ x-ray diffraction studies, In: Y. Syono and M. H. Manghnani (Eds.), High-Pressure Research: Application to Earth and Planetary Sciences, Am. Geophys. Union, Geophys. Monogr., 67, pp.447-455, 1992.


  43. Yagi, T., Y. Uchiyama, M. Akaogi, and E. Ito, Isothermal compression curve of MgSiO3 tetragonal garnet, Phys. Earth Planet. Interiors, 74, 1-7, 1992.  Link


  44. Akaogi, M. and E. Ito, Heat capacity of MgSiO3 perovskite, Geophys. Res. Lett., 20, 105-108, 1993.  Link


  45. Yusa, H., M. Akaogi, and E. Ito, Calorimetric study of MgSiO3 garnet and pyroxene: heat capacities, transition enthalpies, and equilibrium phase relations at high pressures and temperatures, J. Geophys. Res., 98, 6453-6460, 1993.  Link


  46. Akaogi, M. and E. Ito, Refinement of enthalpy measurement of MgSiO3 perovskite and negative pressure- temperature slopes for perovskite-forming reactions, Geophys. Res. Lett., 20, 1839-1842, 1993.  Link


  47. Akaogi, M., High-pressure transformations and thermodynamics of mantle minerals, J. Mineral. Soc. Japan, 22, 201-206, 1993 (in Japanese with English abstract).


  48. Kojitani, H. and M. Akaogi, Calorimetric study of olivine solid solutions in the system Mg2SiO4-Fe2SiO4, Phys. Chem. Minerals, 20, 536-540, 1994.  Link


  49. Yagi, A., T. Suzuki, and M. Akaogi, High pressure transitions in the system KAlSi3O8-NaAlSi3O8, Phys. Chem. Minerals, 21, 12-17, 1994.  Link


  50. Mehta, A., K. Leinenweber, A. Navrotsky, and M. Akaogi, Calorimetric study of high pressure polymorphism in FeTiO3: stability of the perovskite phase, Phys. Chem. Minerals, 21, 207-212, 1994.  Link


  51. Suzuki, T., M. Akaogi, and T. Yagi, Pressure effect on Mn, Co, and Ni partitioning between iron hydride and mantle minerals, Proc. Japan Acad., 70, 31-36, 1994.


  52. Kojitani, H., M. Akaogi and T. Suzuki, Calorimetry of mantle silicate minerals, Netsu Sokutei (J. Jap. Soc. Calor. Therm. Analys.), 21, 118-124, 1994 (in Japanese with English abstract).


  53. Kojitani, H. and M. Akaogi, Measurement of heat of fusion of model basalt in the system diopside-forsterite-anorthite, Geophys. Res. Lett., 22, 2329-2332, 1995.  Link


  54. Suzuki, T. and M. Akaogi, Element partitioning between olivine and silicate melt under high pressure, Phys. Chem. Minerals, 22, 411-418, 1995.  Link


  55. Akaogi, M., Mineral physics pertinent to the constitution of the mantle and core, J. Phys. Earth, 43, 457-478, 1995.


  56. Akaogi, M., H. Yusa, K. Shiraishi, and T. Suzuki, Thermodynamic properties of ƒ¿-quartz, coesite, and stishovite and equilibrium phase relations at high pressures and high temperatures, J. Geophys. Res., 100, 22337-22347, 1995.  Link


  57. Akaogi, M., H. Kojitani, N. Ishizaka and T. Suzuki, Thermodynamic properties of silicate melts, Chikyu Monthly, 17, 19-22, 1995 (in Japanese).


  58. Akaogi, M., Derivation of thermodynamic data of minerals from high temperature calorimetry, Netsu Sokutei (J. Jap. Soc. Calor. Therm. Analys.), 22, 179, 1995 (in Japanese with English abstract).


  59. Suzuki, T., M. Akaogi, and T. Yagi, Pressure dependence of Ni, Co and Mn partitioning between iron hydride and olivine, magnesiowustite and pyroxene, Phys. Earth Planet. Inter., 96, 209-220, 1996.  Link


  60. Ishizaka, N., M. Akaogi, and T. Suzuki, Thermodynamic properties of K2Si4O9 and Na2Si4O9 glasses quenched from melts at high pressures and high temperatures, Mineral. J., 18, 139-146, 1996.


  61. Akaogi, M., Internal structure of the Earth's mantle, J. Jap. Soc. Planet. Sci. (Yuseijin), 5, 113-118, 1996 (in Japanese with English abstract).


  62. Kojitani, H. and M. Akaogi, Melting enthalpy measurements of mantle rocks by high temperature calorimetry, Netsu Sokutei (J. Jap. Soc. Calor. Therm. Analys.), 23, 187-196, 1996 (in Japanese with English abstract).


  63. Toriumi, M., K. Kawamura, I. Ohno, M. Akaogi, T. Kawasaki, and H. Shimizu, gMaterials Science of the Earth and Planetsh, Earth and Planetary Science Series, vol. 5, 229pp., Iwanami, 1996 (in Japanese).


  64. Kubo, A., T. Suzuki, and M. Akaogi, High pressure phase equilibria in the system CaTiO3-CaSiO3: stability of perovskite solid solutions, Phys. Chem. Minerals, 24, 488-494, 1997.  Link


  65. Kojitani, H. and M. Akaogi, Melting enthalpies of mantle peridotite: calorimetric determinations in the system CaO-MgO-Al2O3-SiO2 and application to magma generation, Earth Planet. Sci. Lett., 153, 209-222, 1997.  Link


  66. Akaogi, M., H. Kojitani, H., T. Suzuki and T. Morimune, Calorimetry of silicate melts, Bull. Volcan. Soc. Japan, 42, 29-34, 1997 (in Japanese with English abstract).


  67. Akaogi, M., High-pressure high-temperature transformations and thermodynamic properties of mantle minerals, J. Mineral. Soc. Japan, 26, 15-24, 1997 (in Japanese with English abstract).


  68. Akaogi, M., H. Kojitani, K. Matsuzaka, T. Suzuki, and E. Ito, Postspinel transformations in the system Mg2SiO4-Fe2SiO4: Element partitioning, calorimetry, and thermodynamic calculation, In: M. H. Manghnani and T. Yagi (Editors): Properties of Earth and Planetary Materials at High Pressure and Temperature, Am. Geophys. Union, Geophys. Monogr., 101, 373-384, 1998.  Link


  69. Suzuki, T. and M. Akaogi, Element partitioning between some mantle minerals and the coexisting silicate melt under high pressure, In: M. H. Manghnani and T. Yagi (Eds.): Properties of Earth and Planetary Materials at High Pressure and Temperature, Am. Geophys. Union, Geophys. Monogr., 101, 261-270, 1998.  Link


  70. Akaogi, M., N. Ohmura and T. Suzuki, High pressure dissociation of Fe3Al2Si3O12 garnet: phase boundary determined by phase equilibrium experiments and calorimetry, Phys. Earth Planet. Interiors, 106, 103-113, 1998.  Link


  71. Ito, E., A. Kubo, T. Katsura, M. Akaogi and T. Fujita, High-pressure transformation of pyrope (Mg3Al2Si3O12) in a sintered diamond cubic assembly, Geophys. Res. Lett., 25, 821-824, 1998.  Link


  72. Akaogi, M., N. Ohmura and T. Suzuki, Post-garnet transition of almandine at high pressure: phase equilibrium and calorimetric studies, Rev. High Pressure Sci. Technol., 7, 44-48, 1998.


  73. Suzuki, T., M. Akaogi, T. Katsura and E. Ito, Element partitioning between high pressure minerals and the coexisting melt, Rev. High Pressure Sci. Technol., 7, 98-100, 1998.


  74. Kubo, A., E. Ito, T. Katsura and M. Akaogi, Post-garnet transition in the system MgSiO3-Al2O3, Rev. High Pressure Sci. Technol., 7, 122-124, 1998.


  75. Akaogi, M., T. Suzuki, R. Kojima, T. Honda, E. Ito and I. Nakai, Enthalpy and density measurements of pressure-amorphized GeO2 quartz, Geophys. Res. Lett., 25, 3635-3638, 1998.  Link


  76. Akaogi, M., Calvet calorimeter, In: Handbook of Calorimetry and Thermal Analysis, (ed.) Japan Soc. Calor. Therm. Analys., 52-54, Maruzen, 1998 (in Japanese).


  77. Akaogi, M., Measurements of fusion enthalpies of minerals, In: Handbook of Calorimetry and Thermal Analysis, (ed.) Japan Soc. Calor. Therm. Analys., 203, Maruzen, 1998 (in Japanese).


  78. Akaogi, M. and E. Ito, Calorimetric study on majorite-perovskite transition in the system Mg4Si4O12-Mg3Al2Si3O12: transition boundaries with positive pressure-temperature slopes, Phys. Earth Planet. Interiors, 114, 129-140, 1999.  Link


  79. Akaogi, M., Y. Hamada, T. Suzuki, M. Kobayashi and M. Okada, High pressure transitions in the system MgAl2O4-CaAl2O4: a new hexagonal aluminous phase with implication for the lower mantle, Phys. Earth Planet. Interiors, 115, 67-77, 1999.  Link


  80. Atake, T., N. Inoue, H. Kawaji, K. Matsuzaka and M. Akaogi, Low temperature heat capacity of high-pressure phase of SiO2, coesite, and calculation of the ƒ¿-quartz-coesite equilibrium boundary, J. Chem. Thermodyn., 32, 217-227, 2000.   Link


  81. Akaogi, M. Clues from a shocked meteorite, Science, 287, 1602-1603, 2000.


  82. Matsuzaka, K., M. Akaogi, T. Suzuki and T. Suda, Mg-Fe partitioning between silicate spinel and magnesiowustite at high pressure: experimental determination and calculation of phase relations in the system Mg2SiO4-Fe2SiO4, Phys. Chem. Minerals, 27, 310-319, 2000.  Link


  83. Koito, S., M. Akaogi, O. Kubota and T. Suzuki, Calorimetric measurements of perovskites in the system CaTiO3-CaSiO3 and experimental and calculated phase equilibria for high-pressure dissociation of diopside, Phys. Earth Planet. Interiors, 120, 1-10, 2000.  Link


  84. Suzuki, T., M. Akaogi and E. Nakamura, Partitioning of major elements between garnet-structured minerals and silicate melt at pressure of 3-15 GPa, Phys. Earth Planet. Interiors, 120, 79-92, 2000.  Link


  85. Miura, H., Y. Hamada, T. Suzuki, M. Akaogi, N. Miyajima and K. Fujino, Crystal structure of CaMg2Al6O12, a new Al-rich high pressure form, Am. Mineral., 85, 1799-1803, 2000.  Link


  86. Kubo, A. and M. Akaogi, Post-garnet transitions in the system Mg4Si4O12-Mg3Al2Si3O12 up to 28 GPa: Phase relations of garnet, ilmenite and perovskite, Phys. Earth Planet. Interiors, 121, 85-102, 2000.  Link


  87. Kubo, A., T. Yagi, S. Ono and M. Akaogi, Compressibility of Mg0.9Al0.2Si0.9O3 perovskite, Proc. Japan Acad., 76, 103-107, 2000.  Link


  88. Kojitani, H., A. Navrotsky and M. Akaogi, Calorimetric study of perovskite solid solutions in the CaSiO3-CaGeO3 system, Phys. Chem. Minerals, 28, 413-420, 2001.  Link


  89. Akaogi, M., A. Tanaka, M. Kobayashi, N. Fukushima and T. Suzuki High-pressure transformations in NaAlSiO4 and thermodynamic properties of jadeite, nepheline, and calcium ferrite-type phase, Phys. Earth Planet. Inter., 130, 49-58, 2002.  Link


  90. Reynard, B., A. Kubo and M. Akaogi, Raman spectra of ilmenite phases on the MgSiO3-Mg3Al2Si3O12 join, Eur. J. Mineral., 14, 745-747, 2002.  Link


  91. Akaogi, M., A. Tanaka and E. Ito, Garnet-ilmenite-perovskite transitions in the system Mg4Si4O12-Mg3Al2Si3O12 at high pressures and high temperatures: phase equilibria, calorimetry and implications for mantle structure, Phys. Earth Planet. Inter., 132, 303-324, 2002.  Link


  92. Navrotsky, A., M. Schoenitz, H. Kojitani, H. Xu, J. Zhang, D.J. Weidner, M. Akaogi and R. Jeanloz, Aluminum in magnesium silicate perovskite: synthesis and energetics of defect solid solution, Mat. Res. Soc. Symp. Proc., 718, 103-108, 2002.  Link


  93. Sugawara, T. and M. Akaogi, Calorimetric measurements of fusion enthalpies for Ni2SiO4 and Co2SiO4 olivines and application to olivine-liquid partitioning, Geochim. Cosmochim. Acta, 67, 2683-2693, 2003.  Link


  94. Sugawara, T. and M. Akaogi, Heats of mixing of silicate liquid in the system diopside-anorthite-akermanite, diopside-anorthite-forsterite and diopside-silica, Am. Mineral., 88, 1020-1024, 2003.  Link


  95. Stebbins, J. F., H. Kojitani, M. Akaogi and A. Navrotsky, Aluminum substitution in MgSiO3 perovskite: multiple mechanisms by 27Al NMR, Am. Mineral., 88, 1161-1164, 2003.  Link


  96. Kojitani, H., K. Nishimura, A. Kubo, M. Sakashita, K. Aoki and M. Akaogi, Raman spectroscopy and heat capacity measurement of calcium ferrite type MgAl2O4 and CaAl2O4, Phys. Chem. Minerals, 30, 409-415, 2003.  Link


  97. Akaogi, M., Research on the Earthfs interior by high-pressure experiments, In: Frontier of High Pressure Sciences, (ed.) N.Mori, pp.222-243, Kodansha, 2003 (in Japanese).


  98. Akaogi, M., N. Kamii, A. Kishi and H. Kojitani, Calorimetric study on high-pressure transitions in KAlSi3O8, Phys. Chem. Minerals, 31, 85-91, 2004.  Link


  99. Akaogi, M., M. Yano, Y. Tejima, M. Iijima and H. Kojitani, High-pressure transitions of diopside and wollastonite: phase equilibria and thermochemistry of CaMgSi2O6, CaSiO3 and CaSi2O5-CaTiSiO5 system, Phys. Earth Planet. Inter., 143-144, 145-156, 2004.  Link


  100. Akaogi, M. Calvet calorimeter, In gComprehensive Handbook of Calorimetry and Thermal Analysish, (ed. M. Sorai), Wiley, pp.95-98, 2004


  101. Akaogi, M. Calorimetry of high-pressure minerals, In gComprehensive Handbook of Calorimetry and Thermal Analysish, (ed. M. Sorai), Wiley, pp.357-359, 2004


  102. Sugawara, T. and M. Akaogi, Calorimetry of liquids in the system Na2O-Fe2O3-SiO2, Am. Mineral., 89, 1586-1596, 2004.   Link


  103. Akaogi, M., High temperature reaction calorimetry, In: Experimental Chemistry Series, vol. 6, 5th Edition, (ed.) Chem. Soc. Japan, Maruzen, pp.244-248, 2005 (in Japanese).


  104. Akaogi, M., High-pressure phase equilibria, thermodynamics and calorimetry, Rev. High Press. Sci. Tech. (Akimoto Memorial volume), Japan Soc. High Press. Sci. Tech., 15, 112-119, 2005 (in Japanese with English abstract).  Link


  105. Akaogi, M., Phase relations of minerals and structure of the earthfs interior, Netsu Sokutei (J. Jap. Soc. Calor. Therm. Analys.), 32, 141-147, 2005 (in Japanese with English abstract).   Link


  106. Yusa, H., M. Akaogi, N. Sata, H. Kojitani, Y. Kato and Y. Ohishi, Unquenchable hexagonal perovskite in high pressure polymorphs of strontium silicates, Am. Mineral., 90, 1017-1020, 2005.  Link


  107. Kojitani, H., M. Kido and M. Akaogi, Rietveld analysis of a new high-pressure strontium silicate SrSi2O5, Phys. Chem. Minerals, 32, 290-294, 2005.  Link


  108. Akaogi, M., H. Kojitani, H. Yusa, R. Yamamoto, M. Kido, and K. Koyama, High-pressure transitions and thermochemistry of MGeO3 (M=Mg, Zn, and Sr) and Sr-silicates: Systematics in enthalpies of formation of A2+B4+O3 perovskites, Phys. Chem. Minerals, 32, 603-613, 2005.  Link


  109. Stebbins, J. F., L.S. Du, K. Kelsey, H. Kojitani, M. Akaogi and S. Ono, Aluminum substitution in stishovite and MgSiO3 perovskite: High-resolution 27Al NMR, Am. Mineral., 91, 337-343, 2006.  Link


  110. Yusa, H., Akaogi, M., N. Sata, H. Kojitani, R. Yamamoto, and Y. Ohishi, High-pressure transformations of ilmenite to perovskite, and lithium niobate to perovskite in zinc germanate, Phys. Chem. Minerals, 33, 217-226, 2006.  Link


  111. Kojitani, H., Furukawa, A. and Akaogi, M., Thermochemistry and high-pressure equilibria of post-perovskite phase transition in CaIrO3, Am. Mineral., 92, 229-232, 2007.  Link


  112. Akaogi, M., Phase transitions of minerals in the transition zone and upper part of the lower mantle, In: (E. Ohtani, ed.) Geol. Soc. Amer. Memoir, Advances in High Pressure Mineralogy, 421, 1-13, 2007.

  113. Akaogi, M., Takayama, H., Kojitani, H., Kawaji, H. and Atake, T., Low-temperature heat capacities, entropies and enthalpies of Mg2SiO4 polymorphs, and ƒ¿, ƒÀ, ƒÁ and postspinel phase relations at high pressure, Phys. Chem. Minerals, 34, 169-183, 2007.  Link


  114. Kojitani, H., Katsura, T. and Akaogi, M., Aluminum substitution mechanisms in perovskite-type MgSiO3: An investigation by Rietveld analysis, Phys. Chem. Minerals, 34, 257-267, 2007.  Link


  115. Kojitani, H., Hisatomi, R. and Akaogi, M., High-pressure phase relations and crystal chemistry of calcium ferrite-type solid solutions in the system MgAl2O4-Mg2SiO4, Am. Mineral., 92, 1112-1118, 2007.  Link


  116. Kojitani, H., Shirako, Y. and Akaogi, M., Post-perovskite phase transition in CaRuO3, Phys. Earth Planet. Inter., 165, 127-134, 2007.  Link


  117. Akaogi, M., H. Kojitani, T. Morita, H. Kawaji, T. Atake, Low-temperature Heat capacities, entropies and high-pressure phase relations of MgSiO3 ilmenite and perovskite, Phys. Chem. Minerals, 35, 287-297, 2008.  Link


  118. Bobrov, A.V., Kojitani, H., Akaogi, M. and Litvin, Y.A., The system diopside-jadeite-hedenbergite at 7-24 GPa, Geochim. Cosmochim. Acta, 72, 2392-2408, 2008.  Link


  119. Akaogi, M., M. Haraguchi, M. Yaguchi and H. Kojitani, High-pressure phase relations and thermodynamic properties of CaAl4Si2O11 CAS phase, Phys. Earth Planet. Inter., 173, 1-6, 2009.  Link


  120. Enomoto, A., Kojitani, H., Akaogi, M., Miura, H., Yusa, H., High-pressure transitions in MgAl2O4 and a new high-pressure phase of Mg2Al2O5, J. Solid State Chem., 182, 389-395, 2009.  Link


  121. Oka, K., Azuma, M., Hirai, S., Belik, A.A., Kojitani, H., Akaogi, M., Takano, M., Shimakawa, Y., Pressure-induced transformation of 6H hexagonal to 3C perovskite structure in PbMnO3, Inorg. Chem., 48, 2285-2288, 2009.  Link


  122. Yamaura, K., Shirako, Y., Kojitani, H., Arai, M., Young, D.P., Akaogi, M., Nakashima, M., Katsumata, T., Inaguma, Y., Takayama-Muromachi, E., Synthesis and magnetic and charge transport properties of the correlated 4d post-perovskite CaRhO3, J. Am., Chem. Soc., 131, 2722-2726, 2009. Erratum, 131, 5010, 2009.  Link


  123. Kojitani, H., Wakabayashi, Y., Tejima, Y., Kato, C., Haraguchi, M., Akaogi, M., High-pressure phase relations in Ca2AlSiO5.5 and energetics of perovskite-related materials with oxygen defects in the Ca2Si2O6-Ca2Al2O5 join, Phys. Earth Planet. Inter., 173, 349-353, 2009.  Link


  124. Ono, A., Akaogi, M., Kojitani, H., Yamashita, K. and Kobayashi, M., High-pressure phase relations and thermodynamic properties of hexagonal aluminous phase and calcium-ferrite phase in the systems NaAlSiO4-MgAl2O4 and CaAl2O4-MgAl2O4, Phys. Earth Planet. Inter., 174, 39-49, 2009.  Link


  125. Shirako, Y., Kojitani, H., Akaogi, M., Yamaura, K., Takayama-Muromachi, E., High-pressure phase transitions of CaRhO3 perovskite, Phys. Chem. Minerals, 36, 455-462, 2009.   Link


  126. Akaogi, M., Haraguchi, M., Nakanishi, K., Ajiro, H., Kojitani, H., High-pressure phase relations in the system CaAl4Si2O11-NaAl3Si3O11 with implication for Na-rich CAS phase in shocked Martian meteorites, Earth Planet. Sci. Lett., 289, 503-508, 2010.  Link


  127. Shirako, Y., Satsukawa, H., Kojitani, H., Katsumata, T., Yoshida, M., Inaguma, Y., Hiraki, K., Takahashi, T., Yamaura, K., Takayama-Muromachi, E., Akaogi, M., Magnetic properties of high-pressure phase of CaRuO3 with post-perovskite structure, J. Phys: Conf. Ser., 215, 012038(1-4), 2010.   doi:10.1088/1742-6596/215/1/012038


  128. Akaogi, M., Shirako, Y., Kojitani, H., Takamori, S., Yamaura, K., Takayama- Muromachi, E., Post-perovskite transitions in CaB4+O3 at high pressure, J. Phys: Conf. Ser., 215, 012095(1-4), 2010.   doi:10.1088/1742-6596/215/1/012095


  129. Kojitani, H., Enomoto, A., Tsukamoto, S., Akaogi, M., Miura, H., Yusa, H., High-pressure high temperature phase relations in MgAl2O4, J. Phys: Conf. Ser., 215, 012098(1-4), 2010.   doi:10.1088/1742-6596/215/1/012098


  130. Tsujimoto, Y., Li, J.J., Yamaura, K., Matsushita, Y., Katsuya, Y., Tanaka, M., Shirako, Y., Akaogi, M., Takayama-Muromachi, E., New layered cobalt oxyfluoride, Sr2CoO3, Chem. Commun., 47, 3263-3265, 2011.   Link


  131. Kojitani, H., Iwabuchi, T., Kobayashi, M., Miura, H., Akaogi, M., E., Structure refinement of high-pressure hexagonal aluminous phases K1.00Mg2.00Al4.80Si1.15O12 and Na1.04Mg1.88Al4.64Si1.32O12, Am. Mineral., 96, 1248-1253, 2011.   Link


  132. Akaogi, M., Oohata, M., Kojitani, H., Kawaji, H., Thermodynamic properties of stishovite by low-temperature heat capacity measurements and the coesite-stishovite transition boundary, Am. Mineral., 96, 1325-1330, 2011.   Link


  133. Shirako, Y., Satsukawa, H., Wang, X.X., Li, J.J., Guo, Y.E., Arai, M., Yamaura, K., Yoshida, M., Kojitani, H., Katsumata, T., Inaguma, Y., Hiraki, K., Takahashi, T., Akaogi, M., Integer spin-chain antiferromagnetism of the 4d post-perovskite oxide CaRuO3, Phys. Rev. B83, 174411(1-7), 2011.  Link


  134. Ishii, T., Kojitani, H., Akaogi, M., Post-spinel transitions in pyrolite and Mg2SiO4 and akimotoite-perovskite transition in MgSiO3 : Precise comparison by high-pressure high-temperature experiments with multi-sample cell technique, Earth Planet. Sci. Lett., 309, 185-197, 2011.   Link


  135. Tsujimoto, Y., Yamaura, K., Hayashi, N., Kodama, K., Igawa, N., Matsushita, Y., Katsuya, Y., Shirako, Y., Akaogi, M., Takayama-Muromachi, E., Topotactic synthesis and crystal structure of a highly fluorinated Ruddlesden-Popper type iron oxide, Sr3Fe2O5+xF2-x (x~0.44), Chem. Mater., 23, 3652-3658, 2011.  Link


  136. Shirako, Y., Kojitani, H., Oganov, A.R., Fujino, K., Miura, H., Mori, D., Inaguma, Y., Yamaura, K., Akaogi, M., Crystal structure of a high-pressure polymorph of CaRhO3: an intermediate phase between perovskite and post-perovskite, Am. Mineral., in press, 2011.

Last modified: July 5, 2011

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Masaki Akaogi
Department of Chemistry, Gakushuin Univeristy
Tokyo, Japan mailto:masaki.akaogi@gakushuin.ac.jp

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