X-RAY RESONANT SCATTERING IN THE FERROMAGNET COPT

被引：55
|
作者：
DEBERGEVIN, F
BRUNEL, M
GALERA, RM
VETTIER, C
ELKAIM, E
BESSIERE, M
LEFEBVRE, S
机构：
[1] CNRS,CRISTALLOG LAB,F-38042 GRENOBLE,FRANCE
[2] CNRS,MAGNETISME LOUIS NEEL LAB,F-38042 GRENOBLE,FRANCE
[3] UNIV PARIS 11,UTILISAT RAYONNEMENT ELECTROMAGNET LAB,F-91405 ORSAY,FRANCE
来源：
PHYSICAL REVIEW B | 1992年 / 46卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.46.10772
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Resonant enhancement of the magnetic x-ray scattering has been observed in the ferromagnetic compound CoPt. By measuring the scattered Bragg intensities upon reversal of the magnetization perpendicular to the scattering plane, the asymmetry ratio has been determined for the (220), (331), and the (440) reflections. The resonant line shape of the asymmetry ratios was investigated by tuning the photon energy through the L(III) edge of platinum. Values, as large as -0.012, -0.07, and 0.09 for the (220), (331), and (440) reflections, respectively, are observed at the maximum of the resonance. These values are in agreement with the theoretical predictions made for a similar alloy Pt3Mn. The resonant line shape of asymmetry ratios is accounted for by a single 2p<->5d dipolar electric transition and a magnetic scattering amplitude equal to 0.8 r0 per platinum atom.
引用
收藏
页码：10772 / 10776
页数：5
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