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Ferroelectrics Volume 408, 2010 - Issue 1
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SECTION J: PIEZOELECTRICS AND APPLICATIONS

Enhancement of the Low Temperature Electromechanical Activity by Electric Field Induced Phase Transition in Sr Modified 0.65Pb(Mg1/3Nb2/3)O3-0.35PbTiO3 Ceramics

Zhenzhu Cao State Key Laboratory of High Performance Ceramics and Superfine Structure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, P.R. China; Graduate School of Chinese Academy of Sciences, Beijing, 100039, PR China; Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, PR China
,
Guorong Li State Key Laboratory of High Performance Ceramics and Superfine Structure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, P.R. China
,
Siuwing Or Graduate School of Chinese Academy of Sciences, Beijing, 100039, PR China
,
Jiangtao Zeng State Key Laboratory of High Performance Ceramics and Superfine Structure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, P.R. China
,
Liaoying Zheng State Key Laboratory of High Performance Ceramics and Superfine Structure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, P.R. China
&
Qingrui Yin State Key Laboratory of High Performance Ceramics and Superfine Structure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, P.R. China
Pages 3-8 | Received 23 Aug 2009, Accepted 12 Oct 2009, Published online: 01 Dec 2010
 
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Abstract

The temperature dependences of the dielectric, elastic, piezoelectric properties of Sr modified PMN-PT ceramics have been investigated. Enhanced electromechanical properties have been induced by the electrical field induced phase transition from the monoclinic to the tetragonal phase. Sr substituting Pb shifts this phase transition to low temperature. The enhanced piezoelectric activity facilitates its applications in cryogenic temperature range.

Acknowledgment

This work was supported by the Ministry of Sciences and Technology of China through 973-project (No. 2009CB623305), Natural Science Foundation of China (No. 50675218), the Research Grants Council of the HKSAR Government (No. PolyU 5266/08E), and the Innovation and Technology Fund of the HKSAR Government (No. GHP/003/06).

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