Piezoelectric composition

特許 権利維持 PROBLEM TO BE SOLVED: To provide a tin based piezoelectric composition which has high piezoelectric characteristics and also a high Curie temperature, and is producible as the bulk one. SOLUTION: The piezoelectric composition is expressed by chemical formula of (Sn<SB>x</SB>K<SB>1-x</SB>)(Ti<SB>y</SB>Nb<SB>1-y</SB>)O<SB>3</SB>; wherein, x and y satisfy 0<x<1 and 0<y<1, respectively, and further has a Perovskite structure.