期刊
CHINESE PHYSICS B
卷 21, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/21/7/077503
关键词
magnetic anisotropy; magnetization reversal; ultrathin film
资金
- National Basic Research Program of China [2009CB929201, 2010CB934202, 2011CB921801]
- National Natural Science Foundation of China [50931006, 11034004, 51021061]
The magnetic anisotropy and magnetization reversal of single crystal Fe films with thickness of 45 monolayer (ML) grown on Si(111) have been investigated by ferromagnetic resonance (FMR) and vibrating sample magnetometer (VSM). Owing to the significant modification of the energy surface in remanent state by slight misorientation from (111) plane and a uniaxial magnetic anisotropy, the azimuthal angular dependence of in-plane resonance field shows a six-fold symmetry with a weak uniaxial contribution, while the remanence of hysteresis loops displays a two-fold one. The competition between the first and second magnetocrystalline anisotropies may result in the switching of in-plane easy axis of the system. Combining the FMR and VSM measurements, the magnetization reversal mechanism has also been determined.
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