专利名称：Ferroelectric ceramics
发明人：Hirai, Nobuki,Ushida, Yoshihisa,Ohno, Takao申请号：EP88306443.8申请日：19880714公开号：EP0299759A2公开日：19890118
摘要：Ferroelectric ceramics represented by xPbTiO₃-yPbZrO₃-zPb(MgNb)O₃-mSrTiO₃-nSnO₂-pZnO-qBi₂O₃-rX wherein x,y,z,m,n,p,q and r represent amounts by mole,respectively, with the proviso that x+y+z being 1, X is at least one oxide selected fromthe group consisting of Dy₂O₃, Ta₂O₅, and Y₂O₃, and wherein x is from 0.25 to 0.50, Y isfrom 0.05 to 0.70, z is from 0.05 to 0.70, m is from 0 to 0.10, n is from 0 to 0.04, p is from 0to 0.04, q is from 0 to 0.02 and r is from 0.005 to 0.02. The disclosed ferroelectricceramics have increased relative dielectric constant and/or electromechanical couplingfactor, and are suitable for use as actuators.
申请人：MITSUI PETROCHEMICAL INDUSTRIES, LTD.
地址：2-5, Kasumigaseki 3-chome Chiyoda-ku Tokyo 100 JP
国籍：JP
代理机构：Myerscough, Philip Boyd (GB)
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容