| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a piezoelectric ceramics which is composed of a thin film of an alkali niobate having a lead-free specified composition and has excellent piezoelectric characteristics, and to provide a piezoelectric ceramics element. <P>SOLUTION: The piezoelectric ceramics comprises a thin film of an alkali niobate, expressed by general formula: (Na<SB>x</SB>K<SB>1-x</SB>)<SB>1-y</SB>Nb<SB>y</SB>O<SB>3</SB>, wherein 0.40≤x≤0.48 and 0.48≤y≤0.55. <P>COPYRIGHT: (C)2008,JPO&INPIT |
