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Phase Diagram and Properties of High TC/TR−T Pb(In1/2Nb1/2) O3Pb(Zn1/3Nb2/3)O3PbTiO3 Ferroelectric Ceramics

Authors

  • Tao Li,

    1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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  • Xiuzhi Li,

    1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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  • Dong Guo,

    1. Institute of Acoustics, Chinese Academy of Sciences, Beijing, China
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  • Zujian Wang,

    1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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  • Ying Liu,

    1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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  • Chao He,

    1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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  • Tao Chu,

    1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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  • Liaodong Ai,

    1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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  • Dongfang Pang,

    1. Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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  • Xifa Long

    Corresponding author
    • Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou, Fujian, China
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Author to whom correspondence should be addressed e-mail: lxf@fjirsm.ac.cn

Abstract

A ternary ferroelectric ceramic system, (1−xy)Pb(In1/2Nb1/2)O3xPb(Zn1/3Nb2/3)O3yPbTiO3 (PIN–PZN–PT, x = 0.21, 0.27, 0.36, 0.42), was prepared using a two-step precursor method. The phase structure, dielectric, piezoelectric, and ferroelectric properties of the ternary ceramics were systematically investigated. A morphotropic phase boundary (MPB) was identified by X-ray diffraction. The optimum piezoelectric and electromechanical properties were achieved for a composition close to MPB (0.5PIN–0.21PZN–0.29PT), where the piezoelectric coefficient d33, planar electromechanical coupling factor kp, and remnant polarization Pr are 660 pC/N,72%, and 45 μC/cm2, respectively. The Curie temperature TC and rhombohedral to tetragonal phase transition temperature TR−T were also derived by temperature dependence of dielectric measurements. The strongly “bended” MPB in the PIN–PT system was found to be “flattened” after addition of PZN in the PIN–PT–PZN system. The results demonstrate a possibility of growing ferroelectric single crystals with high electromechanical properties and expanded range of application temperature.

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