期刊
PHYSICAL REVIEW LETTERS
卷 101, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.101.147207
关键词
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资金
- National Science Foundation of China [50625102, 10574026, 60490290]
- National Basic Research Program of China [2007CB925104, 2009CB929201]
- 973-project [2006CB921300]
- Shanghai Science and Technology Committee [06DJ14007]
- Shanghai Leading Academic Discipline Project [B113]
For polycrystalline NiFe/FeMn bilayers, we have observed and quantified the rotation of the pinning direction in the exchange bias training and recovery effects. During consecutive hysteresis loops, the rotation of the pinning direction strongly depends on the magnetization reversal mechanism of the ferromagnet layer. The interfacial uncompensated magnetic moment of antiferromagnetic grains may be irreversibly switched and rotated when the magnetization reversal process of the ferromagnet layer is accompanied by domain wall motion and domain rotation, respectively.
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