| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lead-free piezoelectric material which is excellent in piezoelectric characteristics and temperature characteristics. <P>SOLUTION: The piezoelectric material is composed of a perovskite-type composite oxide represented by general formula (1): in which A is a Bi element, A' is a rare earth element including La; B is at least one element selected from Ti, Zn, Sn and Zr; A'' is at least one element selected from Ba, Sr and Ca; B' is at least one element selected from divalent, trivalent, pentavalent, tetravalent, and hexavalent elements; and x is a value of 0.10 or more and 0.95 or less, y is a value of 10 or more and 0.5 or less, and z is a value of 0 or more and 0.7 or less, provided that x+y+z=1. <P>COPYRIGHT: (C)2010,JPO&INPIT |
