Magnetic Structures of an Iron–Gadolinium Multilayer at Low Temperatures
Magnetic Structures of an Iron–Gadolinium Multilayer at Low Temperatures
复制标题
铁-钆多层膜在低温下的磁结构
DOI：
10.1143/jjap.41.1331
复制
发表时间：
2002
影响因子：
1.5
通讯作者：
C. Nelson
中科院分区：
文献类型：
--
作者：
N. Hosoito;H. Hashizume;N. Ishimatsu;I. Bae;G. Srajer;J. Lang;Chitra K. Venkataraman;C. Nelson
用同步辐射源共振X射线磁散射技术测定了[Fe/Gd]15多层膜的低温磁结构。通过翻转能量接近Gd的L3吸收边的圆偏振探测X射线的螺旋度观察到的镜面布拉格反射的不同强度表明，多层膜处于Gd对准状态，Gd层的磁矩取向平行于所施加的面内场（H= 0.5kOe，T=10 K）。这通过升高场强H和/或温度T而转变成具有倾斜Gd矩的扭曲状态。在扭曲状态下，Gd层的界面和核心处的Gd力矩显示出独特的倾斜角。局部Gd矩的温度和场相关的面内旋转已经可视化。
Low-temperature magnetic structures of an [Fe/Gd]15 multilayer are determined using the resonant X-ray magnetic scattering technique at a synchrotron source. The difference intensities of specular Bragg reflections observed by flipping the helicity of circularly polarized probing X-rays of energy close to the L3 absorption edge of Gd show that the multilayer is in the Gd-aligned state with the magnetic moments of the Gd layers oriented parallel to the applied in-plane field at H=0.5 kOe, T=10 K. This transforms into the twisted state with canted Gd moments by raising field strength H and/or temperature T. In the twisted state, the Gd moments at the interfaces and the core of the Gd layers show distinctive canting angles. Temperature and field-dependent in-plane rotations of local Gd moments have been visualized.