期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 322, 期 15, 页码 2272-2275出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2010.02.024
关键词
Stripe domain; Perpendicular anisotropy; Thin film
资金
- National Natural Science Foundation of China [50701021, 10774062, 10774061]
- Fundamental Research Funds for the Central Universities [Lzujbky-2009-53]
The magnetic FeCoNd films with thickness (t) from 50 to 166 nm were fabricated by RF magnetron co-sputtering at ambient condition. The amorphous structures of all of the films were investigated by X-ray diffraction and transmission electron microscopy. A spin reorientation transition from in-plane single domain state to out-of-plane stripe domain state was observed as a function of t. When t is below a critical thickness, magnetic moments lie in the film plane corresponding to in-plane single domain state because of the strong demagnetization energy. However, when t is increased, out-of-plane stripe domain structure was developed due to a dominated perpendicular magnetic anisotropy. Scanning electron microscopy data indicate that the perpendicular anisotropy, which is responsible for the formation of stripe domains, may result from the shape effect of the columnar growth of the FeCo grains. (C) 2010 Elsevier B.V. All rights reserved.
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