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Chinese Physics, 2006, Vol. 15(6): 1356-1363    DOI: 10.1088/1009-1963/15/6/038
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES Prev   Next  

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
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
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.
Keywords:  piezoelectric      equivalent circuit      dissipation factor      complex physical coefficient      stress      temperature  
Received:  24 October 2005      Revised:  13 March 2006      Accepted manuscript online: 
PACS:  84.30.Bv (Circuit theory)  
  77.65.Bn (Piezoelectric and electrostrictive constants)  
  77.84.Dy  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 50278098).

Cite this article: 

Chen Yu (陈雨), Wen Yu-Mei (文玉梅), Li Ping (李平) Equivalent circuit with complex physical constants and equivalent-parameters-expressed dissipation factors of piezoelectric materials 2006 Chinese Physics 15 1356

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