R3: High-pressure science and deep Earth's material

[R3P-15] Incorporation of Ga³⁺ into CaTiO₃ perovskite

*Nagai Takaya¹, Masaki Ohguro¹, Naoki Takakura¹, Toru Inoue², Toru Shinmei³ (1. Hokkaido Uni. Sci., 2. Hiroshima Uni. Sci., 3. Ehime Uni. GRC)

Keywords:CaTiO3, CaGaO2.5, perovskite, brownmillerite, solid solution

Incorporation of Ga³⁺ into CaTiO₃ perovskite at high pressure was investigated. Synthesis experiments at high pressures were performed at the GRC, Ehime University (This work was supported by the Joint Usage/Research Center PRIUS.). Solid solubility of the CaGaO_2.5 component seems to be related to the stability of CaGaO_2.5 phase with the brownmillerite-type structure.