Magnetism of the double perovskite Sr 2FeMoO 6
Abstract
We have completed a systematic study of the magnetization of a single crystal of double perovskite Sr 2FeMoO 6 over a wide range of temperatures and fields. Near the ordering temperature of 405.0 K, the magnetization is described by critical exponents β=0.50±0.03 and γ=1.20±0.03. At low temperature, the compound is ferromagnetic, but the moment corresponds to only 3.3 μB/formula unit, significantly less than the 3.6 expected. We discuss these observations in terms of mis-site defects of the Fe and Mo ions.
- Publication:
-
Journal of Magnetism and Magnetic Materials
- Pub Date:
- March 2003
- DOI:
- 10.1016/S0304-8853(02)01318-5
- Bibcode:
- 2003JMMM..260..181L