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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Isolated Domain Structure and Its Polar-Surface Asymmetry of Ferroelectric BaMgF_4 Single Crystals
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Isolated Domain Structure and Its Polar-Surface Asymmetry of Ferroelectric BaMgF_4 Single Crystals

机译:铁电BaMgF_4单晶的孤立畴结构及其极性-表面不对称性

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摘要

The isolated, six-side polygonal domain structures are observed in the orthorhombic as-grown BaMgF_4 single crystal by optical microscope and atomic force microscope. The domain configurations demonstrate highly domain wall anisotropy along one principal crystal axis and polar-surface inhomogeneity. The anisotropic behaviour is due to the anisotropy of domain wall energy density in the thermodynamic equilibrium process, and the asymmetric domain surface phenomena is ascribed to the combined contribution from the local electric fields and structure defects-induced mechanical stress during the domain evolution process.
机译:通过光学显微镜和原子力显微镜在正交的生长的BaMgF_4单晶中观察到孤立的六面多边形畴结构。畴结构表现出沿一个主晶轴的高度畴壁各向异性和极性表面不均匀性。各向异性行为是由于在热力学平衡过程中畴壁能量密度的各向异性所致,并且不对称畴表面现象归因于在畴演化过程中局部电场和结构缺陷引起的机械应力的综合作用。

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