中国物理B ›› 2006, Vol. 15 ›› Issue (6): 1356-1363.doi: 10.1088/1009-1963/15/6/038

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Equivalent circuit with complex physical constants and equivalent-parameters-expressed dissipation factors of piezoelectric materials

陈雨1, 文玉梅2, 李平2   

  1. (1)College of Optoelectronic Engineering, Chongqing University,Chongqing 400044, China; (2)College of Optoelectronic Engineering, Chongqing University,Chongqing 400044, China;Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, Chongqing University, Chongqing 400044, China
  • 收稿日期:2005-10-24 修回日期:2006-03-13 出版日期:2006-06-20 发布日期:2006-06-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 50278098).

Equivalent circuit with complex physical constants and equivalent-parameters-expressed dissipation factors of piezoelectric materials

Chen Yu (陈雨)a, Wen Yu-Mei (文玉梅)ab, Li Ping (李平)ab   

  1. a College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China; b Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, Chongqing University, Chongqing 400044, China
  • Received:2005-10-24 Revised:2006-03-13 Online:2006-06-20 Published:2006-06-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 50278098).

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摘要： The equivalent circuit with complex physical constants for a piezoelectric ceramic in thickness mode is established. In the equivalent circuit, electric components (equivalent circuit parameters) are connected to real and imaginary parts of complex physical coefficients of piezoelectric materials. Based on definitions of dissipation factors, three of them (dielectric, elastic and piezoelectric dissipation factors) are represented by equivalent circuit parameters. Since the equivalent circuit parameters are detectable, the dissipation factors can be easily obtained. In the experiments, the temperature and the stress responses of the three dissipation factors are measured.

关键词: piezoelectric, equivalent circuit, dissipation factor, complex physical coefficient, stress, temperature

Abstract: The equivalent circuit with complex physical constants for a piezoelectric ceramic in thickness mode is established. In the equivalent circuit, electric components (equivalent circuit parameters) are connected to real and imaginary parts of complex physical coefficients of piezoelectric materials. Based on definitions of dissipation factors, three of them (dielectric, elastic and piezoelectric dissipation factors) are represented by equivalent circuit parameters. Since the equivalent circuit parameters are detectable, the dissipation factors can be easily obtained. In the experiments, the temperature and the stress responses of the three dissipation factors are measured.

Key words: piezoelectric, equivalent circuit, dissipation factor, complex physical coefficient, stress, temperature

中图分类号:  (Circuit theory)

  • 84.30.Bv
77.65.Bn (Piezoelectric and electrostrictive constants)