Micromagnetism in (001) magnetite by spin-polarized low-energy electron microscopy

被引：17
|
作者：
de la Figuera, Juan [1 ]
Vergara, Lucia [1 ]
N'Diaye, Alpha T. [2 ]
Quesada, Adrian [3 ]
Schmid, Andreas K. [2 ]
机构：
[1] CSIC, Inst Quim Fis Rocasolano, Madrid 28006, Spain
[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[3] CSIC, Inst Ceram & Vidrio, E-28049 Madrid, Spain
来源：
ULTRAMICROSCOPY | 2013年 / 130卷
关键词：
Low-energy electron microscopy; Spin-polarized low-energy electron microscopy; Magnetic oxides; Magnetite; SURFACE RECONSTRUCTION; DOMAIN OBSERVATIONS; FE3O4; FILMS; GRAINS; WALLS;
D O I：
10.1016/j.ultramic.2013.02.020
中图分类号：
TH742 [显微镜];
学科分类号：
摘要：
Spin-polarized low-energy electron microscopy was used to image a magnetite crystal with (001) surface orientation. Sets of spin-dependent images of magnetic domain patterns observed in this surface were used to map the direction of the magnetization vector with high spatial and angular resolution. We find that domains are magnetized along the surface < 110 > directions, and domain wall structures include 90 degrees and 180 degrees walls. A type of unusually curved domain walls are interpreted as Neel-capped surface terminations of 180 degrees Bloch walls. (C) 2013 Elsevier BY. All rights reserved.
引用
收藏
页码：77 / 81
页数：5
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