发明申请
US20060138899A1 Piezoelectric/electrostrictive body, piezoelectric/electrostrictive laminate, and piezoelectric/electrostrictive actuator 有权
压电/电致伸缩体,压电/电致伸缩层压板和压电/电致伸缩致动器

Piezoelectric/electrostrictive body, piezoelectric/electrostrictive laminate, and piezoelectric/electrostrictive actuator
摘要:
There is disclosed a piezoelectric/electrostrictive body which has superior piezoelectric/electrostrictive properties and which exhibits a sufficient durability even in a case where a flexural displacement is repeated a large number of times. A piezoelectric/electrostrictive body is constituted of a large number of crystal grains having the piezoelectric/electrostrictive properties in the form of a film or a layer having one or more layers. A number ratio of crystal grains whose grain diameters W in a width direction are longer than grain diameters T in a thickness direction is 70% or more of a large number of crystal grains observed in an arbitrary section in the thickness direction.
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