专利类型:
相变材料专利导航
公开（公告）号:
US8853920B2
申请日:
2010-05-21
申请局:
US
摘要:
A piezoelectric ceramic composition including a perovskite-type oxide, wherein the perovskite-type oxide has Na, K, Li, Ba and Sr at the A site and Nb, Ta and Zr at the B site, and has a crystal phase transition in a temperature range of −50 to 150° C., the crystal phase transition being accompanied by an endotherm of no greater than 4 J/g, as well as a piezoelectric element 20 provided with a piezoelectric ceramic 1 that contains the piezoelectric ceramic composition.
原始专利权人:
TANAKA DAISUKE | FURUKAWA MASAHITO | TSUKADA TAKEO | TDK CORP
受让人:
TDK CORPORATION
当前专利权人:
TDK Corp