Ferromagnetic resonance studies of exchange biasing in Ni81Fe19/Pt10Mn90 bilayers
Ferromagnetic resonance studies of exchange biasing in Ni81Fe19/Pt10Mn90 bilayers
复制标题
DOI：
10.1063/1.373080
复制
发表时间：
2000-04
影响因子：
3.2
通讯作者：
Haiwen Xi;K. Mountfield;R. White
中科院分区：
文献类型：
--
作者：
Haiwen Xi;K. Mountfield;R. White
In-plane ferromagnetic resonance (FMR) has been used to study exchange anisotropy in Ni81Fe19/Pt10Mn90 bilayers at room temperature. A theoretical calculation for the FMR resonance field was carried out based on a simple model of the exchange bias in a polycrystalline bilayer that incorporates reversible as well as irreversible behavior of the antiferromagnetic layer. In addition to the expected cos φH contribution to the resonance field, where φH is the direction of the applied field, there is a negative shift of the resonance field. It is argued that the negative shift of the resonance related to the irreversible behavior of the antiferromagnetic moments is not isotropic. The linewidth broadening of in-plane resonance for the exchange biased bilayers is also discussed.
