Notes on the domain structures in YMnO3
Notes on the domain structures in YMnO3
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DOI：
10.1080/00150193.2016.1214528
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发表时间：
2016-08
期刊：
影响因子：
0.8
通讯作者：
Y. Ishibashi;M. Iwata;S. Mori
中科院分区：
文献类型：
--
作者：
Y. Ishibashi;M. Iwata;S. Mori
摘要采用离散模型分析了具有三倍晶格周期铁电相的YMnO 3的二维畴结构，其中考虑了沿着x方向的最近邻和次最近邻相互作用，而在y方向上仅考虑最近邻相互作用。确定了模型中的参数值，使三倍周期结构达到稳定。事实证明，通过使用这样的参数值，在纵向和横向畴壁附近的偶极矩的二维分布再现良好。
ABSTRACT The two-dimensional domain structures in YMnO3, which has a ferroelectric phase with the tripled lattice period, have been analyzed by using a discrete model, where the nearest and the next nearest neighbor interactions along the x-direction are taken into account, while only the nearest neighbor interaction is considered in the y-direction. The parameter values in the model are determined so that the structure with the tripled period would be stabilized. It has turned out that, by using such parameter values, the two-dimensional distribution of the dipole moments in the vicinity of the longitudinal and transverse domain walls are reproduced well.