|Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2020: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2018: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
|Outline of Final Research Achievements
Phase changes in mantle-constituent rocks were clarified by high-pressure and high-temperature experiments. High-pressure phase transitions of aluminum- and chromium-bearing minerals were investigated, and crystal structures of newly synthesized high-pressure phases were analyzed by X-ray diffraction method. The pressure-temperature stability conditions of some of the high-pressure minerals were precisely determined by calorimetric measurements and thermodynamic calculation. Furthermore, high-pressure phase transitions of various spinel-type oxides were investigated, and systematics in the phase transitions were clarified.