申请人:Penn State Research Foundation
公开号:US05759432A1
公开(公告)日:1998-06-02
A relaxor ferroelectric composition that has the components lead magnesium niobate, lead titanate, and lead magnesium tungstate. The components are preferably present in relative molar amounts of (1-x-y) lead magnesium niobate, (x) lead titanate, and (y) lead magnesium tungstate, where 0.11.ltoreq.x.ltoreq.0.13 and 0.01.ltoreq.y.ltoreq.0.03. Also disclosed is a tunable ultrasonic transducer made of a relaxor ferroelectric composition that has the components lead magnesium niobate, lead titanate, and lead magnesium tunstate. A method of making a relaxor ferroelectric material comprising the step of adding an effective amount of lead magnesium tungstate to a lead magnesium niobate-lead titanate composition is also disclosed.
一种松弛铁电组合物,其成分包括铅镁铌酸盐、铅钛酸盐和铅镁钨酸盐。这些成分最好以相对摩尔量(1-x-y)铅镁铌酸盐,(x)铅钛酸盐和(y)铅镁钨酸盐的形式存在,其中0.11≤x≤0.13,0.01≤y≤0.03。还公开了一种可调谐超声换能器,其由具有铅镁铌酸盐、铅钛酸盐和铅镁钨酸盐成分的松弛铁电组合物制成。还公开了一种制备松弛铁电材料的方法,包括向铅镁铌酸盐-铅钛酸盐组合物中添加有效量的铅镁钨酸盐的步骤。