Phase stability and Landau phenomenological model of relaxor ferroelectric single crystals 0.78Pb(Mg1/3Nb2/3)O3-0.22PbTiO3
Phase stability and Landau phenomenological model of relaxor ferroelectric single crystals 0.78Pb(Mg1/3Nb2/3)O3-0.22PbTiO3
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弛豫铁电单晶0.78Pb(Mg1/3Nb2/3)O3-0.22PbTiO3的相稳定性和Landau唯象模型
DOI：
10.1016/j.ceramint.2020.12.125
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发表时间：
2020-12
期刊：
影响因子：
--
通讯作者：
Cao Wenwu
中科院分区：
文献类型：
--
作者：
Lu Xiaoyan;Fan Jinhui;Zhang Hangbo;Wu Huaping;Li Hui;Cao Wenwu
Relaxor-based ferroelectric single crystal with lower PbTiO3content has complex phase transitions and mixed ferroelectric and relaxor characteristics, making it very challenging for the construction of Landau free energy expansion crucially used for theoretical investigation of this system. In this work, relaxor behavior in 0.78Pb(Mg1/3Nb2/3)O3-0.22PbTiO3(PMN-0.22PT) single crystals was well suppressed through careful experimental design, leaving preserved single domain state for the Landau parameter extraction in this rhombohedral-phase composition. Using these extracted Landau free energy expansion parameters, energy profile and phase coexistence were theoretically studied and compared with those of PMN-0.30PT and PMN-0.36PT single crystals. Results show that rhombohedral phase dominates in PMN-0.22PT, and tetragonal phase dominates in PMN-0.36PT around room temperature. While, rhombohedral phase and tetragonal phase coexist in MPB composition PMN-0.30PT with small discrepancy of both free energies and polarization vectors.
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影响因子：
17.6
作者：
Lu, Zhilun;Bao, Weichao;Reaney, Ian M.
通讯作者：
Reaney, Ian M.
影响因子：
1.5
作者：
M. Iwata;H. Orihara;Y. Ishibashi
通讯作者：
M. Iwata;H. Orihara;Y. Ishibashi
影响因子：
3.7
作者：
Hang-Bo Zhang;Xiaoyan Lu;Ruixue Wang;Chunying Wang;Limei Zheng;Zhen Liu;Chao Yang;Rui Zhang;Bin Yang;W. Cao
通讯作者：
Hang-Bo Zhang;Xiaoyan Lu;Ruixue Wang;Chunying Wang;Limei Zheng;Zhen Liu;Chao Yang;Rui Zhang;Bin Yang;W. Cao
影响因子：
3.7
作者：
Hang-Bo Zhang;Xiaoyan Lu;Chunying Wang;Limei Zheng;Bin Yang;W. Cao
通讯作者：
Hang-Bo Zhang;Xiaoyan Lu;Chunying Wang;Limei Zheng;Bin Yang;W. Cao
影响因子：
64.8
作者：
Kutnjak, Z.;Petzelt, J.;Blinc, R.
通讯作者：
Blinc, R.