Structure and physical properties of double perovskite compounds Sr 2FeMO6 (M = Mo, W)
Journal
Materials Chemistry and Physics
Journal Volume
93
Journal Issue
2-3
Pages
314-319
Date Issued
2005
Author(s)
Abstract
The crystal structure and physical properties of the Sr 2FeMO6 (M = Mo, W) double perovskite have been investigated. Analysis of the X-ray powder diffraction pattern based on Rietveld refinement indicates that Sr2FeMoO6 and Sr 2FeWO6 have tetragonal cell (space group: I4/m) and orthorhombic cell (space group: Immm), respectively. The Curie-Weiss fit for Sr2FeWO6 gives Curie constant, C = 6.08 and Weiss temperature, θ = -32.6 K. The small and negative value of θ suggests the existence of both weak ferromagnetic and antiferromagnetic interactions at low temperature. The antiferromagnetic interaction dominates over the weak ferromagnetic one. © 2005 Elsevier B.V. All rights reserved.
Type
journal article