| 摘要 |
A perovskite oxide of novel composition with an excellent ferroelectric performance represented by a general expression, (A a , B b ) (C c , D d , X x )O 3 .
(where, A: an A-site element, A = Bi, 0 < a, B: one or more types of A-site elements, 0 ‰¤ b < 1.0, C: an B-site element, C = Fe, 0 < c < 1.0, D: one or more types of B-site elements, 0 ‰¤ d < 1.0, 0 < b + d, X: one or more types of B-site elements, the average valence of which is greater than the average valence of C and D in chemical formula, 0 < x < 1.0, (average valence of A-site in chemical formula) + (average valence of B-site in chemical formula) > 6.0, O: oxygen, and standard molar ratio among A-site elements, B-site elements, and oxygen is 1:1:3, but it may deviate from the standard within a range in which a perovskite structure is possible.) |
