Electrostrictive material and manufacturing method

摘要

An electrostrictive material comprises a compound formed of two or more elements by selecting one or more elements from the group consisting of Sr, Ba, Mg, Ca, Zn and Cd, and the group consisting or Al, Ga and Si, respectively, and oxygen. The compound may be represented by MxAlyO(2x + 3y)/2 where M represents one or more elements selected from the group consisting of Sr, Mg, Ca, Ba, Zn and Cd; and x and y are values each within a range from 1 to 20. One or more rare earth or transition metal elements may be added in an amount within a range from 0.001 to 20 mol.%. The electrostrictive material has a large strain relative to an input electric field, is a non-lead material, and is low in temperature dependency and hysteresis.