Temperature-dependent magnetic anisotropies in epitaxial Fe/CoO/MgO(001) system studied by the planar Hall effect
Temperature-dependent magnetic anisotropies in epitaxial Fe/CoO/MgO(001) system studied by the planar Hall effect
复制标题
通过平面霍尔效应研究外延 Fe/CoO/MgO(001) 体系中温度相关的磁各向异性
DOI：
10.1063/1.3606531
复制
发表时间：
2011-06-27
影响因子：
4
通讯作者：
Wu, Y. Z.
中科院分区：
文献类型：
--
作者：
Cao, W. N.;Li, J.;Wu, Y. Z.
利用平面霍尔效应作为温度的函数，定量研究了单晶Fe/CoO/MgO（001）体系中交换诱导的面内磁各向异性。场冷却使Fe膜具有较强的单轴各向异性，且易轴沿CoO < 110 >方向靠近冷却场方向。交换耦合还导致沿CoO < 100 >方向易轴的4倍各向异性。我们的结果证明了CoO反铁磁自旋的强磁晶各向异性在交换诱导各向异性中起着重要作用。
Exchange-induced in-plane magnetic anisotropies in a single-crystalline Fe/CoO/MgO(001) system were quantitatively investigated using the planar Hall effect as a function of temperature. Field cooling can induce a strong uniaxial anisotropy in Fe film with the easy axis along the CoO〈110〉 directions close to the cooling field direction. The exchange coupling also induces a 4-fold anisotropy with the easy axis along the CoO〈100〉 directions. Our results prove that the strong magneto-crystalline anisotropy of CoO antiferromagnetic spin plays a significant role in exchange-induced anisotropy.