Strohm C, van der Linden P, Mathon O, Pascarelli S
Deutsches Elektronen Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany.
European Synchrotron Radiation Facility, B.P. 220, 38043 Grenoble, France.
Phys Rev Lett. 2019 Mar 29;122(12):127204. doi: 10.1103/PhysRevLett.122.127204.
X-ray magnetic circular dichroism (XMCD) studies at the Er L_{2,3} edges of Er_{3}Fe_{5}O_{12} exhibit a change of the spectral shape as a function of temperature and magnetic field. Using singular value decomposition, this variation is understood as a linear combination of two components. The dominating component is associated with the Er magnetization, while the second contribution is identified as an induced signal from the Fe sites. XMCD at either of the L edges in Er_{3}Fe_{5}O_{12} provides information on the net magnetization of both sublattices. Their evolution in fields up to 30 T reveals details of the ferrimagnetic interactions on two very different scales.
对钇铁石榴石（Er₃Fe₅O₁₂）中铒（Er）的L₂₋₃边进行的X射线磁圆二色性（XMCD）研究表明，光谱形状会随温度和磁场发生变化。通过奇异值分解，这种变化被理解为两个分量的线性组合。主要分量与铒的磁化强度相关，而第二个贡献则被确定为来自铁（Fe）位点的感应信号。钇铁石榴石中任一L边的XMCD提供了关于两个亚晶格净磁化强度的信息。它们在高达30特斯拉的磁场中的演化揭示了两种截然不同尺度上的亚铁磁相互作用的细节。
