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Magnetic moments of W 5d in Ca2CrWO6 and Sr2CrWO6 double perovskites

P. Majewski·S. Gepraegs·A. Boger·M. Opel·A. Erb·R. Gross·G. Vaitheeswaran·V. Kanchana·A. Delin·F. Wilhelm·A. Rogalev·L. Alff
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Abstract

We have investigated the magnetic moment of the W ion in the ferrimagnetic double perovskites Sr2CrWO6 and Ca2CrWO6 by X-ray magnetic circular dichroism (XMCD) at the W L(2,3) edges. In both compounds a finite negative spin and positive orbital magnetic moment was detected. The experimental results are in good agreement with band-structure calculations for (Sr/Ca)2CrWO6 using the full-potential linear muffin-tin orbital method. It is remarkable, that the magnetic ordering temperature, TC, is correlated with the magnetic moment at the 'non-magnetic' W atom.

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P. Majewski, S. Gepraegs, A. Boger, M. Opel, A. Erb, R. Gross, G. Vaitheeswaran, V. Kanchana, A. Delin, F. Wilhelm, A. Rogalev, L. Alff. 2005-10-17. Magnetic moments of W 5d in Ca2CrWO6 and Sr2CrWO6 double perovskites. https://doi.org/10.1103/physrevb.72.132402

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