期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 318, 期 1-2, 页码 23-27出版社
ELSEVIER
DOI: 10.1016/j.jmmm.2007.04.038
关键词
magnetic force microscopy; manganites; domain structure
资金
- National Research Foundation of Korea [2006-312-C00536, R01-2006-000-10639-0, R0A-2007-000-20088-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We have studied the thickness dependence of magnetic domain patterns of magnetoresistive La0.7Sr0.3MnO3. lms on LaAlO3 substrates using magnetic force microscopy. Maze-like domain patterns caused by perpendicular magnetic anisotropy were suddenly developed above the film thickness of similar to 65 nm. This evolvement of magnetic domain pattern was consistent with the magnetic hysteresis data and it can be explained by a simple simulation based on the classical Kittel's model. The critical thickness for the appearance of perpendicular magnetic anisotropy is likely to be determined by a competition between the out-of-plane strain magnetic anisotropy and the in-plane shape anisotropy. (C) 2007 Elsevier B. V. All rights reserved.
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