四重ペロブスカイト酸化物の超高圧合成と多機能性

抄録

Quadruple perovskite oxides AA'₃B₄O₁₂, which can be synthesized under high pressures above several GPa, demonstrate multifunctional properties derived from their structural and electronic features. In this article, we review the recent progress in the intriguing functions of the quadruple perovskite series. RCu₃Fe₄O₁₂ (R = La, Pr, Nd, Sm, Gd) exhibit robust thermal-energy storage properties. CeMn₃Cr₄O₁₂ displays metamagnetic behavior which is attributed to the 4f magnetic moments of Ce³⁺ ions. thermal storage. Systematic comparisons between simple and quadruple perovskite oxides demonstrate that structural feature of the quadruple perovskite serves to enhance the catalytic activity for oxygen evolution reaction.