Verma, Vivek and Dar, M. Abdullah and Pandey, Vibhav and Singh, Anterpreet and Annapoorni, S. and Kotnala, R. K. (2010) Magnetic properties of nano-crystalline Li0.35Cd0.3Fe2.35O4 ferrite prepared by modified citrate precursor method. Materials Chemistry and Physics, 122 (1). pp. 133-137. ISSN 0254-0584

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Abstract

Single phase nano-crystalline lithium cadmium ferrite Li0.35Cd0.3Fe2.35O4 is synthesized by a modified citrate gel precursor technique in different pH media. The modified citrate precursor technique reduces the formation of the impurity phase α-Fe2O3 in the inverse spinel phase of lithium ferrite. X-ray diffraction (XRD) and transmission electron microscopy (TEM) confirmed the average crystallite size. As-prepared sample shows the paramagnetic behaviour of M–H curve measured by vibrating sample magnetometer (VSM). The coercivity (Hc) and magnetization (M) both increase with decrease in temperature from 300 K to 80 K. Temperature dependent magnetic properties below the Curie point are defined by the Bloch's law and Neel relaxation relations. The effect of annealing on magnetic properties at different temperature is studied.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Nano-crystalline; X-ray diffraction; Transmission electron microscopy; Magnetization; Relaxation
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	04 Jun 2012 11:00
Last Modified:	04 Jun 2012 11:00
URI:	http://npl.csircentral.net/id/eprint/230

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