Verma, Vivek and Pandey, Vibhav and Singh, Sukhveer and Aloysius, R. P. and Annapoorni, S. and Kotanala, R. K. (2009) Comparative study of structural and magnetic properties of nano-crystalline Li0.5Fe2.5O4 prepared by various methods. Physica B: Condensed Matter, 404 (16). pp. 2309-2314. ISSN 0921-4526

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Abstract

Lithium ferrite has been considered as one of the highly strategic magnetic material. Nano-crystalline Li0.5Fe2.5O4 was prepared by four different techniques and characterized by X-ray diffraction, vibrating sample magnetometer (VSM), transmission electron microscope (TEM) and Fourier transform infrareds (FTIR). The effect of annealing temperature (700, 900 and 1050 °C) on microstructure has been correlated to the magnetic properties. From X-ray diffraction patterns, it is confirmed that the pure phase of lithium ferrite began to form at 900 °C annealing. The particle size of as-prepared lithium ferrite was observed around 40, 31, 22 and 93 nm prepared by flash combustion, sol–gel, citrate precursor and standard ceramic technique, respectively. Lithium ferrite prepared by citrate precursor method shows a maximum saturation magnetization 67.6 emu/g at 5 KOe.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Elsevier B.V.
Uncontrolled Keywords:	Magnetic properties; X-ray diffraction; Nano-crystalline; Microstructure; Magnetization
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	16 Aug 2012 09:23
Last Modified:	16 Aug 2012 09:23
URI:	http://npl.csircentral.net/id/eprint/426

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