GROWTH AND PIEZOELECTRIC PROPERTIES OF Sr3Ta(Al0.5Ga0.5)3Si2O14 CRYSTALS WITH LANGASITE STRUCTURE

摘要：

　　New piezoelectric crystal Sr3Ta(A10.5Ga0.5)3Si2O14 (STAGS) with ordered langasite structure was successfully grown by Czochralski method.The lattice parameters of STAGS were a =8.269 (A), c =5.036 (A).The rocking curve evident the crystal quality declined and the diffraction peak shift slightly from top to bottom.Element analysis revealed the Al3+ was not easy to occupy the C site as Ga3+ in crystal.The piezoelectric coefficients d11 of STAGS was found to be 5.1pC/N and the resistivity was high up to 4.94×106 Ω·cm for top part and 7.08× 106 Ω ·cm for bottom part at 700℃,respectively.

关键词： piezoelectric materials crystal growth langasite structure

作者: Kai-nan XIONG Yi-ming ZENG Xiao-niu Tu Yan-qing ZHENG Er-wei SHI

作者单位: Shanghai Institute of Ceramic, Chinese Academy of Sciences, Shanghai 201800, China Kunming Institute of Precious Metals, Kunming, Yunnan 650106, China

会议类型: 国际会议

会议名称: The 2017 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2017全国压电和声波理论及器件技术研讨会)

会议地点: 成都

会议语种:英文

页码: 86-90

在线出版日期: 2017-10-27（万方平台首次上网日期，不代表论文的发表时间）