High-field magnetization measurements in Sr <sub>2</sub> CrReO <sub>6</sub> double perovskite: Evidence for orbital contribution to the magnetization

Ján Michalík, J. M. De Teresa, C. Ritter, J. Blasco, David Serrate, M. R. Ibarra, Cz. Kapusta, J. Freudenberger, N. Kozlova

Europhysics Letters (EPL) · 2007 · 38 citations · 20 references

Concepts

Abstract

We have synthesized a Sr2CrReO6 double perovskite sample with the expected high Curie temperature ≈ 600 K, which shows negligible impurity phases and ≈ 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 Sr2CrReO6 and related compound is highlighted.

References

20