硅酸盐学报2017，Vol.45Issue(9)：1271-1279,9.DOI:10.14062/j.issn.0454-5648.2017.09.07
无籽固相法生长的K0.5Na0.5NbO3基压电单晶预合成工艺、结构与性能
Pre-synthesis and Properties of K0.5Na0.5NbO3 Single Crystal by Seed-free Solid-state Crystal Growth Method
摘要
Abstract
Single crystal of 99.7(99.6K0.5Na0.5NbO3-0.4LiBiO3)-0.3CaZrO3 was prepared by a seed-free solid-state crystal growth method. The characteristics, microstructure, piezoelectric and dielectric properties of the single crystal at different pre-synthesis temperatures were investigated. The pre-synthesis powder has a more stable tetragonal phase structure, but its granularity and morphology have little change as the pre-synthesis temperature increases. The centimeter-sized single crystal was prepared with the pre-synthesized powder at different temperatures. The crystal appears semi-transparent with light yellow color. The growth characteristics and microstructure of single crystal have little change at different pre-synthesis temperatures. However, its piezoelectric properties firstly increase and then decrease with increasing the pre-synthesis temperature. The single crystal of 99.7(99.6K0.5Na0.5NbO3-0.4LiBiO3)-0.3CaZrO3 has the optimum piezoelectric constant (i.e., d33=284 pC/N) when the pre-synthesis temperature is 850 ℃.关键词
铌酸钾钠单晶/压电性能/无籽固相晶体生长/预合成工艺Key words
potassium-sodium/single crystal/piezoelectric properties/seed-free solid-state crystal growth/pre-synthesis process引用本文复制引用
宋嘉庚,江民红,李林,严亚飞,郝崇琰,张津玮..无籽固相法生长的K0.5Na0.5NbO3基压电单晶预合成工艺、结构与性能[J].硅酸盐学报,2017,45(9):1271-1279,9.基金项目
国家自然科学基金(51562004 （）
51571142 （）
51102056) （）
广西自然科学基金杰出青年基金、面上和创新团队项目(2016GXNSFFA380007 （）
2015GXNSFAA139276 （）
2016GXNSFGA380001) （）
广西高校优秀人才支持计划 （）
人社部留学人员科技活动项目择优资助(优秀类)基金资助. （优秀类）
