Kumar, Nitu and Gaur, Anurag and Kotnala, R. K. (2014) Stable Fe deficient Sr2Fe1-delta MoO6 (0.0 <= delta <= 0.10) compound. Journal of Alloys and Compounds, 601. pp. 245-250. ISSN 0925-8388

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Abstract

The structural, magnetic and magneto-transport properties of bulk ceramic double perovskite Sr2Fe1 delta-MoO6 (delta = 0.0, 0.02, 0.05 and 0.10) samples were systematically investigated. The rietveld fitted X-ray diffraction patterns shows the tetragonal symmetry with Fe deficiency up to delta = 0.10, which suggested that the crystal structure of the Sr2FeMoO6 (SFMO) does not change so much with Fe deficiency. However, the lattice parameters found to be slightly increased in higher Fe deficiency d = 0.10. The Scanning Electron Microscopy and energy dispersive X-ray spectroscopy analysis reveals that there is no considerable change in grain size, morphology and compositions with Fe deficiency. The saturation magnetization (Ms) showed the decreasing-increasing-decreasing behavior with increasing Fe deficiency. The low field magnetoresistance found to be decreased by increasing Fe deficiency. The observed result shows that the little amount of Fe deficiency provide the structure stability by varying the Fe/Mo ion valences, but it harmful and should be avoided to achieve the better magnetoresistive properties in pristine SFMO compound.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Uncontrolled Keywords:	Double perovskite Fe deficient system Low field magnetoresistance
Subjects:	Materials Science Metallurgy & Metallurgical Engineering
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	05 Nov 2015 10:38
Last Modified:	05 Nov 2015 10:38
URI:	http://npl.csircentral.net/id/eprint/1542

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