Misfit strain phase diagrams of epitaxial PMN-PT films
Misfit strain phase diagrams of epitaxial PMN-PT films
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DOI：
10.1063/1.4913706
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发表时间：
2015-02-23
影响因子：
4
通讯作者：
Alpay, S. P.
中科院分区：
文献类型：
--
作者：
Khakpash, N.;Khassaf, H.;Alpay, S. P.
采用现象学模型计算了（001）伪（1 - x）中心点Pb (Mgl/3Nb2/3)O-3 - x中心点PbTiO3 （PMN-PT）薄膜三种成分的Misfit应变-温度相图。两个（x = 0.30, 0.42）位于室温（RT）下PMN-PT体的嗜形相边界（MPB）附近，一个（x = 0.70）位于远离嗜形相边界的地方。结果表明，在广泛的失配菌株范围内稳定自适应单斜相是可能的。在RT下，PMN-PT的这一相的稳定区域比钛酸锶钡和锆钛酸铅薄膜大得多。(C) 2015 AIP出版有限责任公司
Misfit strain-temperature phase diagrams of three compositions of (001) pseudocubic (1 - x)center dot Pb (Mgl/3Nb2/3)O-3 - x center dot PbTiO3 (PMN-PT) thin films are computed using a phenomenological model. Two (x = 0.30, 0.42) are located near the morphotropic phase boundary (MPB) of bulk PMN-PT at room temperature (RT) and one (x = 0.70) is located far from the MPB. The results show that it is possible to stabilize an adaptive monoclinic phase over a wide range of misfit strains. At RT, the stability region of this phase is much larger for PMN-PT compared to barium strontium titanate and lead zirconate titanate films. (C) 2015 AIP Publishing LLC.