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Study of the structure and dielectric relaxation behavior of Pb(Mg1/3Nb2/3)O3–PbTiO3 ferroelectric ceramics

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Abstract

(1–x)PMN–xPT[PMN, Pb(Mg1/3Nb2/3)O3; PT, PbTiO3] system ferroelectric ceramics with x = 0.30, 0.33, 0.35, and 0.38 were synthesized by the columbite precursor method. Their structure and dielectric behavior were investigated. X-ray diffraction results demonstrate that no two-phase region is presented, but a quasi-cubic to tetragonal phase boundary lies between x = 0.30 and 0.33. Examination of the dielectric behavior reveals that the transformation from relaxor to normal ferroelectric behavior across the morphotropic phase boundary (MPB) is successive and continuous. It is suggested that x 4 0.30 to 0.33 is the composition of MPB for the PMN–PT system. The MPB is also a boundary for the PMN–PT system to transform from relaxor to normal ferroelectrics.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China

    Xiaowen Zhang

  2. Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, People’s Republic of China

    Fei Fang

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  1. Xiaowen Zhang
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  2. Fei Fang
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Correspondence to Xiaowen Zhang.

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Zhang, X., Fang, F. Study of the structure and dielectric relaxation behavior of Pb(Mg1/3Nb2/3)O3–PbTiO3 ferroelectric ceramics. Journal of Materials Research 14, 4581–4586 (1999). https://doi.org/10.1557/JMR.1999.0620

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  • DOI: https://doi.org/10.1557/JMR.1999.0620

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