| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a perovskite oxide of novel composition with an excellent ferroelectric performance. <P>SOLUTION: The perovskite oxide is represented by a general formula: (A<SB>a</SB>, B<SB>b</SB>)(C<SB>c</SB>, D<SB>d</SB>, X<SB>x</SB>)O<SB>3</SB>[wherein A is an A-site element, A=Bi and 0<a; B is one or more types of A-site elements; 0≤b<1.0; C is a B-site element; C=Fe and 0<c<1.0; D is one or more types of B-site elements, 0≤d<1.0 and 0<b+d; X is one or more types of B-site elements, and 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 valance of B-site in chemical formula)>6.0; O is 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]. <P>COPYRIGHT: (C)2010,JPO&INPIT |
