Magnetization reversal process in Fe/Si (001) single-crystalline film investigated by planar Hall effect

doi:10.1088/1674-1056/24/2/027505

Abstract A planar Hall effect (PHE) is introduced to investigate the magnetization reversal process in single-crystalline iron film grown on a Si (001) substrate. Owing to the domain structure of iron film and the characteristics of PHE, the magnetization switches sharply in an angular range of the external field for two steps of 90° domain wall displacement and one step of 180° domain wall displacement near the easy axis, respectively. However, the magnetization reversal process near the hard axis is completed by only one step of 90° domain wall displacement and then rotates coherently. The magnetization reversal process mechanism near the hard axis seems to be a combination of coherent rotation and domain wall displacement. Furthermore, the domain wall pinning energy and uniaxial magnetic anisotropy energy can also be derived from the PHE measurement.

Keywords: magnetic thin film domain wall displacement planar Hall effect

Received: 22 September 2014
Revised: 15 October 2014
Accepted manuscript online:

PACS:	75.70.Ak	(Magnetic properties of monolayers and thin films)
	75.70.Kw	(Domain structure (including magnetic bubbles and vortices))
	75.30.Gw	(Magnetic anisotropy)
	75.47.-m	(Magnetotransport phenomena; materials for magnetotransport)

Fund: Project supported by the National Basic Research Program of China (Grant Nos. 2011CB921801 and 2012CB933102), the National Natural Science Foundation of China (Grant Nos. 11374350, 11034004, 11274361, 11274033, 11474015, and 61227902), and the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20131102130005).

Corresponding Authors: Chen Zi-Yu, Cheng Zhao-Hua
E-mail: chenzy@buaa.edu.cn;zhcheng@iphy.ac.cn

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Ye Jun (叶军), He Wei (何为), Hu Bo (胡泊), Tang Jin (汤进), Zhang Yong-Sheng (张永圣), Zhang Xiang-Qun (张向群), Chen Zi-Yu (陈子瑜), Cheng Zhao-Hua (成昭华) Magnetization reversal process in Fe/Si (001) single-crystalline film investigated by planar Hall effect 2015 Chin. Phys. B 24 027505

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Magnetization reversal process in Fe/Si (001) single-crystalline film investigated by planar Hall effect

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