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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
作者:宋嘉庚 江民红   严亚飞 郝崇琰 张津玮 
单位:桂林电子科技大学材料科学与工程学院 广西信息材料重点实验室 广西 桂林 541004 
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 
分类号:TBO78
出版年,卷(期):页码:2017,45(9):0-0
DOI:
摘要:

 采用无籽固相晶体生长技术制备99.7(99.6K0.5Na0.5NbO3–0.4LiBiO3)–0.3CaZrO3无铅压电单晶,研究了预合成温度对合成粉末的特性以及后续生长的单晶生长特性、微结构、压电和介电性能的影响。结果表明:随着预合成温度的升高,合成粉末趋于形成更稳定的正交相结构,但粉末粒度和形貌没有明显变化。采用不同预合成温度合成的粉末均能制备出厘米级的单晶,晶体呈淡黄色半透明状。在研究范围内,预合成温度的变化对晶体的生长特性和晶体结构没有明显影响。但随着预合成温度的升高,晶体压电常数d33先增加后减小,当预合成温度为850 ℃时,达到最大值d33=284 pC/N。

 
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。
作者简介:
宋嘉庚(1991—),男,硕士研究生。
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