Studies on physicochemical properties of pure and iron substituted chromium niobates, Cr1-xFexNbO4 (x=0, 0.2, 0.4, 0.6)

Murthy, A Sree Rama and Gnanasekar, K I and Govindaraj, R and Jayaraman, V and Umarji, A M (2017) Studies on physicochemical properties of pure and iron substituted chromium niobates, Cr1-xFexNbO4 (x=0, 0.2, 0.4, 0.6). In: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 217 . pp. 63-73.

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Abstract

Pristine and iron substituted chromium niobates (Cr1-xFexNbO4 with x = 0, 0.2, 0.4 and 0.6) are prepared by solid-state synthesis and phase characterised by X-ray diffraction. Microstructure is determined using scanning electron microscope and micro-chemical analysis is performed by energy dispersive X-ray analysis (EDX). The current-voltage characteristics are studied in the temperature range of 423-723 K. The electrical conductivity of sintered pellets is measured by impedance spectroscopy. Temperature dependent magnetization studies are performed using vibrating sample magnetometer (VSM) and room temperature Bohr magneton number is calculated from the magnetic susceptibility data. The conductivity is passed through a minimum at x = 0.2 in Cr1-xFexNbO4 for x = 0-0.6. X-ray photoelectron spectroscopic studies revealed the surface non-stoichiometry in these compositions. (C) 2016 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Publisher:	ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Additional Information:	Copy right for this article belongs to the ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	20 May 2017 05:40
Last Modified:	20 May 2017 05:40
URI:	http://eprints.iisc.ac.in/id/eprint/56911

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