理学部　化学科　赤荻研究室にようこそ。

Recent Publications (1995- )

1. 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



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



3. Akaogi, M., Mineral physics pertinent to the constitution of the mantle and core, J. Phys. Earth, 43, 457-478, 1995.
   
   
4. Akaogi, M., H. Yusa, K. Shiraishi, and T. Suzuki, Thermodynamic properties of α-quartz, coesite, and stishovite and equilibrium phase relations at high pressures and high temperatures, J. Geophys. Res., 100, 22337-22347, 1995.  Link



5. Akaogi, M., H. Kojitani, N. Ishizaka and T. Suzuki, Thermodynamic properties of silicate melts, Chikyu Monthly, 17, 19-22, 1995 (in Japanese).
   
   
6. 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).
   
   
7. 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



8. 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.
   
   
9. Akaogi, M., Internal structure of the Earth's mantle, J. Jap. Soc. Planet. Sci. (Yuseijin), 5, 113-118, 1996 (in Japanese with English abstract).
   
   
10. 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).
    
    
11. Toriumi, M., K. Kawamura, I. Ohno, M. Akaogi, T. Kawasaki, and H. Shimizu,“Materials Science of the Earth and Planets”, Earth and Planetary Science Series, vol. 5, 229pp., Iwanami, 1996 (in Japanese).
    
    
12. 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



13. 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



14. 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).
    
    
15. 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).
    
    
16. 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



17. 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



18. 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



19. 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



20. 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.
    
    
21. 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.
    
    
22. 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.
    
    
23. 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



24. Akaogi, M., Calvet calorimeter, In: Handbook of Calorimetry and Thermal Analysis, (ed.) Japan Soc. Calor. Therm. Analys., 52-54, Maruzen, 1998 (in Japanese).
    
    
25. 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).
    
    
26. 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



27. 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



28. 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 α-quartz-coesite equilibrium boundary, J. Chem. Thermodyn., 32, 217-227, 2000.  Link



29. Akaogi, M.Clues from a shocked meteorite, Science, 287, 1602-1603, 2000.
    
    
30. 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



31. 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



32. 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



33. 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



34. 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



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



36. 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



37. 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



38. Reynard, B., A. Kubo and M. Akaogi, Raman spectra of ilmenite phases on the Mg₄Si₄O₁₂-Mg₃Al₂Si₃O₁₂ join, Eur. J. Mineral., 14, 745-747, 2002.  Link



39. 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



40. 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



41. 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



42. 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



43. 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



44. 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



45. Akaogi, M., Research on the Earth’s interior by high-pressure experiments, In: Frontier of High Pressure Sciences, (ed.) N. Mori, pp.222-243, Kodansha, 2003 (in Japanese).
    
    
46. 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



47. 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



48. Akaogi, M. Calvet calorimeter, In “Comprehensive Handbook of Calorimetry and Thermal Analysis”, (ed. M. Sorai), Wiley, pp.95-98, 2004.
    
    
49. Akaogi, M. Calorimetry of high-pressure minerals, In “Comprehensive Handbook of Calorimetry and Thermal Analysis”, (ed. M. Sorai), Wiley, pp.357-359, 2004.
    
    
50. Sugawara, T. and M. Akaogi, Calorimetry of liquids in the system Na2O-Fe2O3-SiO2, Am. Mineral., 89, 1586-1596, 2004.  Link



51. 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).
    
    
52. 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



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



54. 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



55. 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



56. 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



57. 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



58. 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



59. 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



60. Akaogi, M., Phase transitions of minerals in the transition zone and upper part of the lower mantle, In: Geol. Soc. Amer. Memoir, Advances in High Pressure Mineralogy, 421, 1-13, 2007.
    
    
61. Akaogi, M., Takayama, H., Kojitani, H., Kawaji, H. and Atake, T., Low-temperature heat capacities, entropies and enthalpies of Mg2SiO4 polymorphs, and α,β,γ and postspinel phase relations at high pressure, Phys. Chem. Minerals, 34, 169-183, 2007.  Link



62. 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



63. 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



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



65. 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



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



67. 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



68. 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



69. 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



70. 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



71. 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



72. 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



73. 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



74. 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



75. 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.   Link



76. 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.  Link



77. 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.   Link



78. 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



79. Kojitani, H., Iwabuchi, T., Kobayashi, M., Miura, H., Akaogi, M., E., Structure refinement of high-pressure hexagonal aluminous phases K_1.00Mg_2.00Al_4.80Si_1.15O₁₂ and Na_1.04Mg_1.88Al_4.64Si_1.32O₁₂, Am. Mineral., 96, 1248-1253, 2011.   Link



80. 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



81. 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



82. 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



83. 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, Sr₃Fe₂O_5+xF_2-x (x~0.44), Chem. Mater., 23, 3652-3658, 2011.  Link



84. 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., 97, 159-163, 2012.  Link



85. Shirako, Y., Shi, Y. G., Aimi, A., Mori, D., Kojitani, K., Yamaura, K., Inaguma, Y., Akaogi, M., High-pressure stability relations, crystal structures, and physical properties of perovskite and post-perovskite of NaNiF₃, J. Solid State Chem., in press, 2012



86. Kojitani, H., Oohata, M., Inoue, T., Akaogi, M., Redetermination of high-temperature heat capacity of Mg₂SiO₄ ringwoodite: Measurement and lattice vibrational model calculation, Am. Mineral., in press, 2012.