|
|||||
|
|
Local structure and magnetism of Fe, Co and Ni doped Cr3Si |
|
| Authors: | P. Zaleski K. SzymańskiW. Olszewski M. BiernackaK. Perzyńska D. Satu?aA. Go J. Przewo?nikD.A. Zaj?c M. PylakL. Dobrzyński |
| Affiliation: | a Faculty of Physics, University of Bia?ystok, Lipowa 41, 15-424 Bia?ystok, Poland b Faculty of Physics and Applied Computer Science, University of Mining and Metallurgy, Mickiewicza 30, 30-052 Cracow, Poland c Deutsches Elektronen-Synchrotron, Notkestr. 85, 22607 Hamburg, Germany d Institute of Nuclear Physics PAN, ul. Radzikowskiego 152, 31-342 Kraków, Poland e The Andrzej So?tan Institute for Nuclear Studies, 05-400 ?wierk-Otwock, Poland |
| Abstract: | The lattice site occupation of 3d-type impurities in Cr3Si doped with Fe, Co and Ni were studied using the Extended X-ray Absorption Fine Structure (EXAFS) technique, X-rays and magnetic susceptibility measurements. The EXAFS measurements were performed particularly carefully on the K-edge of chromium and cobalt. EXAFS data strengthened by simulations of the spectra show unambiguously that the impurities are occupying mostly Cr-sites. The magnetic state of the alloys has been studied theoretically using the Wien2k code. It is observed that if calculations are not carried out on an appropriately fine mesh of points in k-space, one can get the result indicating ferromagnetism although the overall magnetic moment per formula unit is weak. |
| Keywords: | Metals and alloys EXAFS X-ray diffraction Cr3Si |
| 本文献已被 ScienceDirect 等数据库收录！ | |