一种新压电材料——类石英晶体GaPO_4  

A New Piezoelectric Material: Quartz Homeotypic Gallium Orthophosphate

作　　者：张传忠[1] 

机构地区：[1]四川压电与声光技术研究所

出　　处：《压电与声光》1999年第1期64-67,共4页Piezoelectrics & Acoustooptics

摘　　要：磷酸镓（ＧａＰＯ４）单晶是一种新的压电材料，其晶体结构与石英很相似，但其热稳定性以及压电效应和机电耦合系数却要高得多，并且具有体声波（ＢＡＷ）和声表面波（ＳＡＷ）所需要的温度补偿切型。它是一种用于温度范围超过９００°Ｃ的压电换能器和传感器的非常有前途的材料。文章介绍了ＧａＰＯ４的晶体生长。Single crystalline gallium orthophosphate (GaPO 4) is a new piezoelectric material which is very similar to quartz in its crystal structure but has a much higher thermal stability, a higher piezoelectric effect, larger electromechanical coupling constants and temperature compensated cuts for bulk acoustic wave(BAW)and surface acoustic wave(SAW)applications. It is a promising material for piezoelectric transducers and sensors in the temperature range over 900 °C . This paper introduces the crystal growth, crystal structure in GaPO 4 as well as its some important physical properties.

关 键 词：磷酸镓 压电效应 热稳定性 晶体生长 压电材料 

分 类 号：TM220.144[一般工业技术—材料科学与工程]