Electronic and Magnetic Structures of Sr2FeMoO6

Ray, Sugata and Kumar, Ashwani and Sarma, DD and Cimino, R and Turchini, S and Zennaro, S and Zema, N (2001) Electronic and Magnetic Structures of Sr2FeMoO6. In: Physical Review Letters, 87 (9). 097204/1-4.

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Abstract

We have investigated the electronic and magnetic structures of Sr2FeMoO6 employing site-specific direct probes, namely x-ray absorption spectroscopy with linearly and circularly polarized photons. In contrast to some previous suggestions, the results clearly establish that Fe is in the formal trivalent state in this compound. With the help of circularly polarized light, it is unambiguously shown that the moment at the Mo sites is below the limit of detection (<0.25 µB), resolving a previous controversy. We also show that the decrease of the observed moment in magnetization measurements from the theoretically expected value is driven by the presence of mis-site disorder between Fe and Mo sites.

Item Type:	Journal Article
Publication:	Physical Review Letters
Publisher:	American Physical Society
Additional Information:	Copyright for this article belongs to American Physical Society (APS).
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	27 Oct 2004
Last Modified:	04 Jan 2013 11:18
URI:	http://eprints.iisc.ac.in/id/eprint/1998

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