High-Pressure Silicates and Oxides

After receiving a B.Sc. in petrology and mineralogy from Tohoku University, Masaki Akaogi earned a Ph.D. in geophysics from the University of Tokyo. Subsequently, he worked as an assistant professor and as an associate professor in the Department of Earth Sciences, Kanazawa University. He was a postdoctoral fellow in the Department of Chemistry, Arizona State University in the early 1980s, and was a visiting scientist in the Department of Geosciences, Princeton University. From 1990 to 2021, he was a full professor in the Department of Chemistry, Gakushuin University, where he is currently an emeritus professor. He served as an editor of Physics and Chemistry of Minerals (Springer) from 1997 to 2005. His research interests include high-pressure phase equilibria and thermodynamic properties of silicates and related compounds with applications for clarifying mineralogy, structure, and dynamics of the Earth’s interior and for synthesis of new inorganic materials. Dr. Akaogi is a fellow of the Mineralogical Society of America and of the Japan Geoscience Union. He has received awards from the Mineralogical Society of Japan and the Japan Society of High Pressure Science and Technology.

• Introduction.- Crystal chemistry and thermodynamics of high-pressure phase transition.- High-pressure and high-temperature experiments with large-volume apparatus.- Calorimetric experiments and thermodynamic calculation of high-pressure phase relations.- Olivine - modified spinel - spinel transitions.- Phase transitions of pyroxene and garnet, and post-spinel transition forming perovskite.- Crystal chemistry, phase relations, and energetics of high-pressure ABO3 perovskites.- Post-perovskite transition in ABX3 and phase transitions in AO2.- Post-spinel transition in AB2O4.- Phase transitions in mantle rocks.- High-pressure minerals from the Earth’s mantle and in shocked meteorites.