Magnetic anisotropy and magnetization reversal of ultrathin iron films with in-plane magnetization on Si(111) substrates
Magnetic anisotropy and magnetization reversal of ultrathin iron films with in-plane magnetization on Si(111) substrates
复制标题
Si(111)衬底上面内磁化超薄铁膜的磁各向异性和磁化反转
DOI：
10.1088/1674-1056/21/7/077503
复制
发表时间：
2012-07-01
影响因子：
1.7
通讯作者：
Cheng, Zhao-Hua
中科院分区：
文献类型：
--
作者：
Liu, Hao-Liang;He, Wei;Cheng, Zhao-Hua
用铁磁共振（FMR）和振动样品磁强计（VSM）研究了Si（111）衬底上生长的45单层（ML）Fe单晶薄膜的磁各向异性和磁化反转。由于（111）晶面的微小取向偏差和单轴磁各向异性对剩磁态能面的显著影响，面内共振场的方位角依赖性表现为六重对称，单轴贡献较弱，而磁滞回线的剩磁表现为二重对称.第一磁晶各向异性和第二磁晶各向异性之间的竞争可能导致系统面内易磁化轴的切换。结合FMR和VSM的测量结果，还确定了磁化反转机制。
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.