公开(公告)号：US3640865A

公开(公告)日：1972-02-08

申请号：US3640865D

申请日：1970-04-09

Applicant: IBM

Inventor： BURNS GERALD ,  GIESS EDWARD A ,  O'KANE DANIEL F

IPC: C04B35/495 ,  H01L41/187 ,  C04B35/00 ,  C04B35/60

CPC classification number: C04B35/495 ,  H01L41/1873

Abstract: New transparent ferroelectric compositions have been prepared having a tetragonal tungsten-bronze-type crystallographic structure and having the formula x(ANbO3) . (1-x) MNb2O6 where A is at least one alkali metal ion and M is an alkaline earth metal ion and where x can be from 0.12 to 0.50. These materials have large dielectric constants, ( Epsilon ), and linear electro-optic coefficients (r), at room temperature. The value of r is significantly larger than that of LiNbO3. These materials have great potential as light modulators and deflectors.

Abstract translation: 已经制备了具有四方钨 - 青铜型晶体结构并具有式x（ANbO 3）的新型透明铁电组合物。 （1-x）MNb 2 O 6，其​​中A为至少一种碱金属离子，M为碱土金属离子，x为0.12至0.50。 这些材料在室温下具有很大的介电常数（ε）和线性电光系数（r）。 r的值显着大于LiNbO3的值。 这些材料作为光调制器和偏转器具有很大的潜力。