Pandey, Vibhav and Verma, Vivek and Aloysius, R. P. and Bhalla, G. L. and Awana, V. P. S. and Kishan, H. and Kotnala, R. K. (2009) Magnetic and magneto-transport properties of double perovskite Ba2−xSrxFeMoO6 system. Journal of Magnetism and Magnetic Materials, 321 (14). pp. 2239-2244. ISSN 0304-8853

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Abstract

The structural magnetic and magneto-transport properties of double perovskite system Ba2−xSrxFeMoO6 (0 <= x <= 1.0) prepared in bulk polycrystalline form are reported in this paper. X-ray diffraction analysis showed that samples are single phase and the lattice constants decreases with increase in the Sr content. The degree of Fe–Mo ordering has been found decreasing in the series with an increase in the Sr content. Parent compound Ba2FeMoO6 exhibits saturation magnetic moment value of 3.54 μB/f.u. at 85 K in a magnetic field of 6000 Oe. Temperature dependence of resistivity shows metallic behavior for all the samples. The magneto-resistance (MR) of the compound with x=0.4 is higher than that of the other samples. At room temperature this system shows a saturation magnetization value of 1.73 μB/f.u. and MR value of 7.08% (1 T). The observed variations in the structural and magnetic properties are attributed to the change of chemical pressure due to the substitution of Sr in place of Ba. The effect of antisite disorder (ASD) defects on magneto-transport properties is studied in more detail.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Ba2FeMoO6; Double perovskite; Magneto-resistance; Magnetization
Subjects:	Materials Science Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	11 Sep 2012 08:53
Last Modified:	11 Sep 2012 08:53
URI:	http://npl.csircentral.net/id/eprint/561

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