Growth and Properties of Tetragonal Tungsten Bronze Type Potassium Lithium Niobate Single Crystals
Growth and Properties of Tetragonal Tungsten Bronze Type Potassium Lithium Niobate Single Crystals
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DOI：
10.1002/crat.2170320215
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发表时间：
1997
影响因子：
1.5
通讯作者：
H. Xia;L. Hu;J. Wei;J. Wang;Y. Liu
中科院分区：
文献类型：
--
作者：
H. Xia;L. Hu;J. Wei;J. Wang;Y. Liu
用助熔剂提拉法生长了Nb/Li比大于3的四方钨青铜型KLi单晶，在顺电/铁电相变冷却过程中不会产生裂纹。研究了[100]和[001]两种取向的晶体生长，发现[100]和[001]取向的晶体生长质量优于前者。298K时晶格常数a=1.2575 nm，c=0.3997 nm，居里温度约为480±3℃。
Tetragonal tungsten bronze type potassium lithium niobate single crystals with the Nb/Li ratio larger than 3 are grown by the flux pulling method in our laboratory, and it dose not crack when cooling through the paraelectric/ferroelectric phase transition. Crystal growth is studied in two orientations with growth along [100] and [001], and the latter's quality is superior to that of the former. The lattice constants are a = 1.2575 nm and c = 0.3997 nm at 298 K. A Curie temperature is about 480 ± 3°C.