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EPL Association, European Physical Society Letters, 4(60), p. 608-614

DOI: 10.1209/epl/i2002-00262-4

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Experimental evidence of the ferrimagnetic ground state of Sr <sub>2</sub> FeMoO <sub>6</sub> probed by X-ray magnetic circular dichroism

Journal article published in 2002 by M. Besse, V. Cros, A. Barthélémy, H. Jaffrès, J. Vogel ORCID, F. Petroff, A. Mirone, A. Tagliaferri, P. Bencok, P. Decorse, P. Berthet, Z. Szotek, W. M. Temmerman, S. S. Dhesi, N. B. Brookes and other authors.
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Abstract

We have investigated the magnetic structure of a Sr2FeMoO6 single crystal by X-ray magnetic circular dichroism at the L2,3 edges of Fe and Mo sites. The spin magnetic moments we find on Fe (3.05muB) and Mo ( - 0.32muB) give, for the first time, a direct confirmation of their ferrimagnetic ordering. The presence of a finite spin moment on Mo together with only very small orbital moments on both Fe and Mo confirms that the predicted half-metallicity of the Sr2FeMoO6 compound is due to a configuration with five localized d electrons forming a high-spin moment on Fe and one s antiparallel delocalized electron shared between the Mo and the other sites.