XAS and MCD studies in Laves compounds with multi‐magnetic phase transitions

Autor:	Naomi Kawamura, Masaichiro Mizumaki, Susumu Nanao, Kenji Yoshii, Yasuhiro Watanabe
Rok vydání:	2006
Předmět:	Condensed Matter::Materials Science X-ray absorption spectroscopy Magnetic moment X-ray magnetic circular dichroism Condensed matter physics Magnetic circular dichroism Chemistry Sum rule in quantum mechanics Absorption (chemistry) Condensed Matter Physics Spectral line Spin magnetic moment
Zdroj:	physica status solidi c. 3:2762-2766
ISSN:	1610-1642 1862-6351
DOI:	10.1002/pssc.200669525
Popis:	We investigated the magnetic phase transition of the Laves phases, which shows the multiple magnetic phase transition, by using X-ray absorption (XAS) and magnetic circular dichroism (MCD). XAS-MCD measurements were performed around the Fe-K and L2,3 edges. The magnet-optical sum rule was applied to XAS and MCD spectra of L2,3 edges. The orbital and spin magnetic moment were estimated respectively. The orbital magnetic moment increased abruptly below the magnetic phase transition temperature. The spin magnetic moment had no abrupt change at the magnetic phase transition temperature. This shows that there is a strong correlation between the multiple magnetic phase transition and the orbital magnetic moment. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Databáze:	OpenAIRE
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