Document Type and Number:
Japanese Patent JPS4842318
Kind Code:
B1
Abstract:
An electrooptic ferroelectric ceramic material of a lead lanthanum zirconate titanate solid solution having about 5 to 25 atom percent lanthanum with the ratio of zirconium to titanium varying from about 5/95 to about 95/5, hot-pressed, having an optical transmittance throughout the visible spectrum of about 100 percent for optically polished plates about 0.25 millimeters thick, with an effective birefringence of from about -0.003 to -0.03 at saturation remanence polarization to near zero as the remanent polarization is switched to electrical zero, and an effective electrooptic coefficient at saturation remanence from about 1 x 10<->2 to 5 x 10<->2 m2/C, and for memory applications a coercive field from about 2 to 10kV/cm.
Application Number:
JP11131370A
Publication Date:
December 12, 1973
Filing Date:
December 15, 1970
Export Citation:
International Classes:
C04B35/49; C04B35/46; C04B35/48; C04B35/50; C04B35/51; G02F1/00; G02F1/055; H01B3/12; H01G7/02; H01L41/187; (IPC1-7): C04B35/00