Patent ID: 7999448

Claim:
A piezoelectric material comprising: a material with the molecular formula P 1−c−d D c Z d , wherein 0<c≦0.15 and 0≦d≦0.5, wherein P represents the composition Pb(Zr 1−y Ti y )O 3 , where 0.50≦1−y≦0.60, wherein Z represents an additional component of the perovskite type of structure, wherein D represents a material according to the general formula [(M 1 O) 1−p (M 2 O) p ] a [Nb 2 O 5 ] 1−a , wherein M 1 represents Ba 1−t Sr t with 0≦t≦1, M 2 represents strontium, ⅔<a<1 and 0<p<1, and wherein the material D contains a cryolite type of structure.