A new class of ordered langasite structure compounds

被引：81

作者：

Chai, BHT ^{[1
]}

Bustamante, ANP ^{[1
]}

Chou, MC ^{[1
]}

机构：

[1] Crystal Photon Inc, Sanford, FL 32773 USA

来源：

PROCEEDINGS OF THE 2000 IEEE/EIA INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM & EXHIBITION | 2000年

关键词：

D O I：

10.1109/FREQ.2000.887346

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Langasite (LGS) and its isomorphs are only a few piezoelectric crystals which have the unique temperature compensation property. But most of the known langasite structure compounds are disordered. Disorder causes higher acoustic losses and also non-uniform mechanical properties. We reported a new class of langasite isomorph which has all the cations totally ordered. They are CNGS (Ca3NbGa3Si2O14), CTGS (Ca3TaGa3Si2O14), SNGS (Sr3NbGa3Si2O14) and STGS (Sr3TaGa3Si2O14). They all melt congruently. High quality single crystals were produced by Czochralski melt pulling technique. They have the advantages of low Ga2O3 content, high acoustic velocity and low acoustic loss.

引用

页码：163 / 168

页数：4

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