Kumar, Pravin and Singh, Nitish Kumar and Gupta, Govind and Singh, Prabhakar (2016) Effect of lanthanum (La3+) doping on the structural and electrical properties of double perovskite Sr2NiMoO6. RSC Advances, 6 (26). 22094-22102 . ISSN 2046-2069

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Abstract

To study the effect of La3+ doping on structural and electrical properties, a few compositions of the system Sr2-xLaxNiMoO6-delta (x = 0.02, 0.04, 0.06, 0.08, and 0.10) were synthesized via the citrate-nitrate route. Thermally activated electrical conductivity was observed in this system. The reduction of Mo6+ to Mo5+ was confirmed not only in the thermal analysis but also in the detailed XPS investigation of the samples. The structural behavior was probed by phase formation of the compositions confirmed in X-ray diffraction Rietveld analysis. The SEM images of the compositions indicated that a grain size of the order of a few micrometers was observed in this system. The highest conductivity was obtained for the composition with x 0.04. The electrical behaviour of the system was explained in terms of the lattice strain, the impure phase present in the system and also in terms of the enhanced charge density inverted right perpendicular Mo-Mo6+(5+) inverted left perpendicular . The XPS and XRD analysis support the variation of conductivity behaviour with composition.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Royal Society of Chemistry.
Subjects:	Chemistry
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	17 Nov 2017 11:12
Last Modified:	17 Nov 2017 11:12
URI:	http://npl.csircentral.net/id/eprint/2195

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