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Domain structure and evolution in ZnO‐modified Pb(Mg 1/3 Nb 2/3 )O 3 –0.32PbTiO 3 ceramics
Author(s) -
Wang RuiXue,
Zhang Ji,
Li Kai,
Sun Lei,
Yang Bin,
Chen YanBin,
Luo ZhenLin,
Wang Yaojin,
Zhang ShanTao
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16303
Subject(s) - materials science , ceramic , piezoelectricity , sintering , electric field , thermal stability , dielectric , doping , phase transition , atmospheric temperature range , domain (mathematical analysis) , mineralogy , condensed matter physics , composite material , chemical engineering , thermodynamics , optoelectronics , chemistry , physics , mathematical analysis , mathematics , quantum mechanics , engineering
The doping of ZnO is efficient to improve the piezoelectric property and thermal stability of Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 ( PMN – PT ) based ceramics. However, the underlying physics, especially the local domain structures of the ZnO modified PMN – PT ceramics, which is strongly associated with the electric properties, is not clear yet. In this paper, we investigated the local domain structures and their evolution as a function of x in PMN –0.32 PT : x ZnO ceramics. It was found that, the domain evolution is mainly caused by the growth of grain size induced by the sintering aiding effect of ZnO at x < 0.04, and the domain evolution can be attributed to the phase transition induced by the partial replacement of Mg 2+ by Zn 2+ in the B‐site of PMN – PT lattice at x > 0.06. Furthermore, we also investigated the domain structure evolution as functions of temperature and local external electric field in PMN –0.32 PT :0.06ZnO ceramics, which exhibited superior piezoelectric property relative to other compositions. We found that the irregular nanodomains are more stable at high‐temperature range, and the regular non‐180° domains exhibited more complex rotation behavior under local electric field, which probably leads to the thermal stability and piezoelectric property enhancement in the ZnO‐modified PMN –0.32 PT ceramics.