Winkler, A. ; Narayanan, N. ; Mikhailova, D. ; Bramnik, K. G. ; Ehrenberg, H. ; Fuess, H. ; Vaitheeswaran, G. ; Kanchana, V. ; Wilhelm, F. ; Rogalev, A. ; Kolchinskaya, A. ; Alff, L. (2009):
Magnetism in Re-based ferrimagnetic double perovskites.
In: New Journal of Physics, 11 (7), pp. 073047. ISSN 1367-2630,
[Article]
Abstract
We have investigated spin and orbital magnetic moments of the Re 5d ion in the double perovskites A2FeReO6 (A=Ba, Sr, Ca) by x-ray magnetic circular dichroism (XMCD) at the Re L2, 3 edges. In these ferrimagnetic compounds, an unusually large negative spin and positive orbital magnetic moment at the Re atoms was detected. The presence of a finite spin magnetic moment in a 'non-magnetic' double perovskite as observed in the double perovskite Sr2ScReO6 proves that Re has also a small, but finite intrinsic magnetic moment. We further show for the examples of Ba and Ca that the usually neglected alkaline earth ions undoubtedly also contribute to the magnetism in the ferrimagnetic double perovskites.
| Item Type: | Article |
|---|---|
| Erschienen: | 2009 |
| Creators: | Winkler, A. ; Narayanan, N. ; Mikhailova, D. ; Bramnik, K. G. ; Ehrenberg, H. ; Fuess, H. ; Vaitheeswaran, G. ; Kanchana, V. ; Wilhelm, F. ; Rogalev, A. ; Kolchinskaya, A. ; Alff, L. |
| Title: | Magnetism in Re-based ferrimagnetic double perovskites |
| Language: | English |
| Abstract: | We have investigated spin and orbital magnetic moments of the Re 5d ion in the double perovskites A2FeReO6 (A=Ba, Sr, Ca) by x-ray magnetic circular dichroism (XMCD) at the Re L2, 3 edges. In these ferrimagnetic compounds, an unusually large negative spin and positive orbital magnetic moment at the Re atoms was detected. The presence of a finite spin magnetic moment in a 'non-magnetic' double perovskite as observed in the double perovskite Sr2ScReO6 proves that Re has also a small, but finite intrinsic magnetic moment. We further show for the examples of Ba and Ca that the usually neglected alkaline earth ions undoubtedly also contribute to the magnetism in the ferrimagnetic double perovskites. |
| Journal or Publication Title: | New Journal of Physics |
| Journal Volume: | 11 |
| Issue Number: | 7 |
| Uncontrolled Keywords: | Condensed matter: electrical, magnetic and optical |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Advanced Thin Film Technology 11 Department of Materials and Earth Sciences > Material Science > Structure Research 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 30 Mar 2012 08:36 |
| URL / URN: | http://dx.doi.org/10.1088/1367-2630/11/7/073047 |
| Identification Number: | doi:10.1088/1367-2630/11/7/073047 |
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