PIEZOELECTRIC MATERIAL

摘要

Provided is a piezoelectric material including a lead-free perovskite-type composite oxide which is excellent in piezoelectric characteristics and temperature characteristics and is represented by the general formula (1): xABO3-yA′BO3-zA″B′O3 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 0 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.