Structural, electrical and magnetic characterization of the double perovskites Sr2CrMO6 (M = Mo, W): B′ 4d-5d system
Journal
Solid State Communications
Journal Volume
131
Journal Issue
8
Pages
531-535
Date Issued
2004
Author(s)
Chan, T. S.
Liu, R. S.
Guo, G. Y.
Hu, S. F.
Lee, J. F.
Jang, L. Y.
Chang, C. R.
Abstract
We report on the preparation and characterization of the variation of B′-site transition metal in Sr2CrMO6 (M = Mo, W) with double perovskites structure. The magnetic susceptibility shows that Sr2CrMoO6 and Sr2CrWO6 are antiferromagnets with TN = 40 and 30 K at H = 1 T, respectively. In addition, a large magnetoresistance ratio (MR) of ∼ 38% (H = 3 T) at 5 K was observed in the Sr2CrWO6 compound. However, the Sr 2CrMoO6 compound does not show any significant MR even at high fields (MR ∼ 4%; H = 3 T and 5 K). The measured O K-edge X-ray absorption is in agreement with the calculated O p-density of states for both compounds. © 2004 Elsevier Ltd. All rights reserved.
Type
journal article