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Magnetic circular dichroism in X-ray fluorescence of Heuseler alloys at threshold excitation
Russian Academy of Sciences-Ural Division,Yekaterinburg .
Russian Academy of Sciences-Ural Division,Yekaterinburg .
Russian Academy of Sciences-Ural Division,Yekaterinburg .
Russian Academy of Sciences-Ural Division,Yekaterinburg .
Vise andre og tillknytning
2001 (engelsk)Inngår i: Solid State Communications, ISSN 0038-1098, E-ISSN 1879-2766, Solid State Communications, ISSN ISSN 0038-1098, EISSN 1879-2766, Vol. 117, nr 2, s. 79-82Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The results of fluorescence measurements of magnetic circular dichroism (MCD) in Mn L2,3 X-ray emission and absorption for Heusler alloys NiMnSb and Co2MnSb are presented. Very intense resonance Mn L3 emission is found at the Mn 2p3/2 threshold and attributed to a peculiarity of the threshold excitation in materials with a half-metallic character of the electronic structure. The excitation energy dependence of Mn L2,3 X-ray emission spectra (XES) was measured at beamline ID12B at the European Synchrotron Radiation Facility (ESRF, Grenoble) using 83% circularly polarized X-rays. A very large MCD effect found in XES is attributed to strong exchange splitting of spin-up and spin-down Mn 3d states. The anomalously high ratio of L2 emission intensity to L3 emission intensity is found.

sted, utgiver, år, opplag, sider
2001. Vol. 117, nr 2, s. 79-82
Emneord [en]
A. Magnetically ordered materials; D. Electronic states (localized); D. Recombination and trapping; E. Synchrotron radiation; E. X-ray emission
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Identifikatorer
URN: urn:nbn:se:liu:diva-54978DOI: 10.1016/S0038-1098(00)00415-4OAI: oai:DiVA.org:liu-54978DiVA, id: diva2:312890
Tilgjengelig fra: 2010-04-26 Laget: 2010-04-26 Sist oppdatert: 2018-06-04bibliografisk kontrollert

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