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Dielectric properties of Pb(Zn1/3Nb2/3)O3–PbZrO3–PbTiO3 system in the rhombohedral region near the morphotropic phase boundary

  • X. P. Jiang (a1), J. W. Fang (a1), H. R. Zeng (a1), G. R. Li (a1), D. R. Chen (a1) and Q. R. Yin (a1)...

Abstract

A diffuse phase transition for Pb(Zn1/3Nb2/3)O3–PbZrO3–PbTiO3 (PZN-PZ-PT) system in the rhombohedral region near the rhombohedral/tetragonal morphotropic phase boundary (MPB) is reported in this paper. A thermal-driven macrodomain– microdomain switching was revealed and confirmed for compositions close to the MPB in the rhombohedral region after poling. Morever, the transition from rhombohedral phase to tetragonal phase was first revealed in the curves of dielectric permittivity (or dissipation factor) versus temperature. This rhombohedral–tetragonal phase transition resulted from the MPB bending toward the rhombohedral phase region and was confirmed by high-temperature x-ray diffraction.

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