Investigation of Phase Structure and Electrical Properties of Doped PMN–PZT Ceramics Prepared by Different Methods

Authors

  • Li Wang,

    1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
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  • Ruihong Liang,

    1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
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  • Chaoliang Mao,

    1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
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  • Min Gao,

    1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
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  • Gang Du,

    1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
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  • Fei Cao,

    1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
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  • Genshui Wang,

    1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
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  • Xianlin Dong

    Corresponding author
    • Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
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  • This work was financially supported by National High Technology Research and Development Program of China (“863” program, 2009AA03Z108) and Shanghai technology innovation program (9595810900).

Author to whom correspondence should be addressed. e-mail: xldong@sunm.shcnc.ac.cn

Abstract

The doped 0.25Pb(Mg1/3Nb2/3)O3–0.40PbTiO3–0.35PbZrO3 (PMN–PZT) ceramics with pure perovskite phase were prepared by one-step oxide-mixed method and conventional columbite method. The phase structure and electrical properties were systematically investigated. Crystallites of the ceramic fabricated by the oxide-mixed method are partially oriented with the c-axis, while samples prepared from columbite method are randomly oriented. This crystalline orientation enabled better electric properties, especially a higher piezoelectric coefficient d33 of 760 pC/N and electromechanical coupling factor kp of 69%. Materials fabricated from the oxide-mixed method are attractive for high-performance piezoelectric actuator and this simple method may have a great prospect in industrial production.

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