x射线发射光谱中的磁线性二色性:Yb3 Fe5 O12中的Yb

IF 9.3 2区 化学 Q1 CHEMISTRY, PHYSICAL Catalysis Reviews-Science and Engineering Pub Date : 2000-07-01 DOI:10.1103/PHYSREVB.62.379
F. Groot, M. Krisch, F. Sette, J. Vogel
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引用次数: 2

摘要

在yb3fe5o12中的Yb的2p 1/ 24d x射线发射光谱中观察到高达5%的磁线性二色MLD效应。光谱形状可以很好地再现与原子重乘计算的4d到2p衰变。结果表明,光谱形状的细节由4d4f交换相互作用决定。虽然MLD效应的综合强度为零,但该效应的大小是Yb的4f磁矩的直接度量。该技术适用于所有稀土和过渡金属系统(探测三维磁矩)。关于x射线吸收磁圆二色性,它具有(i)涉及硬x射线和(ii)不需要圆偏振的优点。因此,所有与电子检测、软x射线实验和圆偏振有关的并发症都消失了。潜在的应用包括~埋藏!磁系统在原地,在高压,变化(高)磁场,和变化的温度。
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Magnetic linear dichroism in x-ray emission spectroscopy: Yb in Yb3 Fe5 O12
A magnetic linear dichroism MLD effect of up to 5% has been observed in the 2p 1/2 4d x-ray emission spectrum of Yb in Yb 3 Fe 5 O 12 . The spectral shape is well reproduced with an atomic multiplet calculation of the 4d to 2p decay. It is shown that the details of the spectral shapes are determined by the 4d4 f exchange interaction. While the integrated intensity of the MLD effect is zero, the magnitude of the effect is a direct measure of the 4 f magnetic moment of Yb. The technique is applicable to all rare-earth and transition-metal systems (probing the 3d magnetic moment). With respect to x-ray-absorption magnetic circular dichroism it possesses the advantage that (i) hard x rays are involved and (ii) no circular polarization is needed. Therefore all complications related to electron detection, soft x-ray experiments, and circular polarization disappear. Potential applications include the study of ~buried! magnetic systems in situ, at high pressures, varying (high) magnetic fields, and varying temperatures.
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来源期刊
CiteScore
22.30
自引率
2.80%
发文量
29
期刊介绍: Catalysis Reviews is dedicated to fostering interdisciplinary perspectives in catalytic science and engineering, catering to a global audience of industrial and academic researchers. This journal serves as a bridge between the realms of heterogeneous, homogeneous, and bio-catalysis, providing a crucial and critical evaluation of the current state of catalytic science and engineering. Published topics encompass advances in technology and theory, engineering and chemical aspects of catalytic reactions, reactor design, computer models, analytical tools, and statistical evaluations.
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