Magnetic domain structures of La0.67Sr0.33MnO3 thin films with different morphologies

被引：66

作者：

Lecoeur, P ^{[1
]}

Trouilloud, PL ^{[1
]}

Xiao, G ^{[1
]}

Gupta, A ^{[1
]}

Gong, GQ ^{[1
]}

Li, XW ^{[1
]}

机构：

[1] BROWN UNIV,DEPT PHYS,PROVIDENCE,RI 02912

来源：

JOURNAL OF APPLIED PHYSICS | 1997年 / 82卷 / 08期

关键词：

D O I：

10.1063/1.365700

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using a wide-field Kerr microscope, we have studied the magnetic domain structures of epitaxial and polycrystalline La0.67Sr0.33MnO3 thin films as well as a film having thermally induced [110] microcracks. The epitaxial film on a (001) SrTiO3 substrate has different magnetic domain behaviors for in-plane fields applied along the [100] and [110] directions. Magnetic domain orientation and contrast suggest a biaxial magnetic anisotropy with [110] easy axes. Defects such as microcracks and grain boundaries have a strong perturbing effect on the local magnetization and can lead to an enhanced and controllable spin-dependent scattering. (C) 1997 American Institute of Physics.

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页码：3934 / 3939

页数：6

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