非一致层厚的多层铁电单晶结构的特性和优化

功能材料与器件学报 , 2012, 18(4): 322-331. doi: 10.3969/j.issn.1007-4252.2012.04.011

非一致层厚的多层铁电单晶结构的特性和优化

席奎 ^1, , 吴正斌 ^2, , 李闪闪 ^3, , 郑海荣 ^4, , 朱华兵 ^5, , 吴樵 ^6,

1.中国科学院深圳先进技术研究院,深圳,518055

2.中国科学院深圳先进技术研究院,深圳,518055

3.中国科学院深圳先进技术研究院,深圳,518055;深圳大学材料学院,深圳,518060

4.中国科学院深圳先进技术研究院,深圳,518055

5.海军工程大学兵器工程系,武汉430033

6.北京大学信息科学技术学院,北京,100871

基金项目: 国家自然科学基金(10804075) 广东省中国科学院全面战略合作项目(2010B090300004;2011B090300095)

关键词：宽频带超声换能器 , 多层压电结构 , PMN-PT , 优化

Characteristics and Optimization of Multilayer Ferroelectric Single Crystal Structures with Non-uniform Layer Thicknesses

本文针对宽频带超声换能器的设计,对采用非一致层厚的多层铁电单晶结构的特性进行了研究和优化.建立了基于复材料参数的多层压电结构的理论模型,运用模拟退火全局优化算法对多层铌镁酸铅-钛酸铅结构的层厚进行了优化,并分析了各层厚度变化对多层压电结构频率响应特性的影响.理论仿真和实验结果证明非一致层厚的多层铁电单晶结构能够用于设计和制造高性能宽频带超声换能器.

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材料期刊网

非一致层厚的多层铁电单晶结构的特性和优化

Characteristics and Optimization of Multilayer Ferroelectric Single Crystal Structures with Non-uniform Layer Thicknesses

参考文献