期刊
APPLIED PHYSICS LETTERS
卷 96, 期 3, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3284658
关键词
calcium compounds; magnetic anisotropy; magnetic domain walls; nucleation; optical harmonic generation; optical microscopy; praseodymium compounds; strontium compounds
资金
- MEXT, Japan [20340086]
We have observed charge-ordering-induced polar domains and domain walls (DWs) in a bilayered manganite Pr(Sr0.15Ca0.85)(2)Mn2O7 using second-harmonic-generation microscopy. Around the transition temperature T-C similar to 306 K, a nucleation process of the domains with spontaneous polarization is clearly observed. Well below T-C, the characteristic band-shaped dark patterns are identified in the second-harmonic images. On the analogy of the nucleation feature, they can be assigned to the DWs separating antiparallel polar domains. The anisotropy in the DW is governed by the geometrical constraint of the charge and orbital ordering, not by the electrostatic stability as in conventional ferroelectric DWs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据