High-field magnetization measurements in Sr2CrReO6 double perovskite: Evidence for orbital contribution to the magnetizationJ. M. Michalik1, 2, J. M. De Teresa1, C. Ritter3, J. Blasco1, D. Serrate1, M. R. Ibarra1, 4, C. Kapusta2, J. Freudenberger5 and N. Kozlova5
1 Instituto de Ciencia de los Materiales de Aragón, CSIC-Universidad de Zaragoza, Facultad de Ciencias - Zaragoza, 50009, Spain
2 Department of Solid State Physics, Faculty of Physics and Applied Computer Sciences, AGH University of Science and Technology - 30-059 Cracow, Poland
3 Institute Laue-Langevin - Grenoble Cedex, 38042, France
4 Instituto de Nanociencia de Aragón, Universidad de Zaragoza - Zaragoza, 50009, Spain
5 IFW Dresden, Institute for Metallic Materials - P.O. Box 270116, D-01171 Dresden, Germany
received 22 November 2006; accepted in final form 21 February 2007; published April 2007
published online 22 March 2007
We have synthesized a double perovskite sample with the expected high Curie temperature , which shows negligible impurity phases and Cr/Re structural antisite disorder as shown by X-ray and neutron diffraction. High-field magnetization measurements up to 47 T show that the saturation magnetization below room temperature is much higher than the one predicted by simple models that do not take into account the Re spin-orbit coupling. The crucial role of the large Re orbital moment in the physics of and related compound is highlighted.
75.30.Cr - Saturation moments and magnetic susceptibilities.
61.12.Ld - Neutron diffraction .
61.10.Nz - X-ray diffraction .
© Europhysics Letters Association 2007