High-field magnetization measurements in Sr2CrReO6 double perovskite: Evidence for orbital contribution to the magnetization

J. M. Michalik; J. M. De Teresa; C. Ritter; J. Blasco; D. Serrate; M. R. Ibarra; C. Kapusta; J. Freudenberger; N. Kozlova

doi:10.1209/0295-5075/78/17006

All issues

Volume 78 / No 1 (April 2007)

EPL, 78 1 (2007) 17006

Abstract

Issue		EPL Volume 78, Number 1, April 2007


Article Number		17006
Number of page(s)		6
Section		Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI		https://doi.org/10.1209/0295-5075/78/17006
Published online		22 March 2007

EPL, 78 (2007) 17006

High-field magnetization measurements in Sr₂CrReO₆ double perovskite: Evidence for orbital contribution to the magnetization

J. 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

Corresponding author: deteresa@unizar.es

Received: 22 November 2006
Accepted: 21 February 2007

Abstract

We have synthesized a ${\rm Sr}_{2}{\rm CrReO}_{6}$ double perovskite sample with the expected high Curie temperature $\approx 600\,{\rm K}$ , which shows negligible impurity phases and $\approx 15{\%}$ 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 ${\rm Sr}_{2}{\rm CrReO}_{6}$ and related compound is highlighted.

PACS: 75.30.Cr – Saturation moments and magnetic susceptibilities / 61.12.Ld – Neutron diffraction / 61.10.Nz – X-ray diffraction

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