期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 25, 期 26, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/25/26/266001
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资金
- Deutsche Forschungsgemeinschaft [Sonderforschungsbereich 491]
We investigated magnetic phase transitions, magnetic anisotropy, and magnetic domains in Pd1-xFex alloys with different Fe concentrations x = 2.2-7.2%. The Curie temperature depends linearly on the Fe concentration in the regime studied. The magnetization is dominantly in-plane with a small out-of-plane remanent contribution. Resonant magnetic small angle scattering with circularly polarized x-rays tuned to the L-3 resonance edge of Fe revealed a small angle scattering ring corresponding to magnetic domain fluctuations on a length scale of 100 nm. These fluctuations are isotropically distributed in the film plane and appear to have an out-of-plane component. On increasing the transverse coherence of the incident beam, the scattering ring decomposes in a speckle pattern, indicative of magnetic correlations on a length scale smaller than the x-ray coherence length of about 4 mu m.
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