Piezoelectric material, piezoelectric element, multilayered piezoelectric element, liquid discharge head, liquid discharge apparatus, ultrasonic motor, optical apparatus, vibratory apparatus, dust removing device, image pickup apparatus, and electronic equipment

摘要

To provide a lead-free piezoelectric material having a high and stable piezoelectric constant in a wide operating temperature range. The piezoelectric material contains a perovskite type metal oxide having the general formula (1), Mn, Mg,(Ba_1-xCa_x)_a(Ti_1-y-zSn_yZr_z)O₃  (1)(wherein x is in the range of 0.050≦x≦0.200, y is in the range of 0.010≦y≦0.040, and z is in the range of 0≦z≦0.040, provided that x≧0.375(y+z)+0.050, and a is in the range of 0.9925+b≦a≦1.0025+b)wherein the amount b (mol) of Mn on a metal basis per mole of the metal oxide is in the range of 0.0048≦b≦0.0400, and the Mg content on a metal basis per 100 parts by weight of the metal oxide is 0.100 parts by weight or less.