Pal, M and Brahma, P and Chakravorty, D and Bhattacharyya, D and Maiti, Himadri Sekhar (1996) Nanocrystalline nickel-zinc ferrite prepared by the glass-ceramic route. Journal of Magnetism and Magnetic Materials, 164 (1-2). pp. 256-260. ISSN 0304-8853

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Abstract

Ni0.5Zn0.5Fe2O4 crystals having dimensions in the range 15-29 nm have been grown within berate glass by a two-stage heat treatment in the temperature range 873-953 K. Magnetic measurements have been carried out over the temperature range 20-300 K. The maximum coercive force corresponding to 0 K, (H-co) similar to 334 Oe, is obtained for a sample containing ferrite crystals of median diameter 15 nm. Field-cooled and zero-field-cooled magnetization data for different samples are consistent with the blocking temperatures extracted from the variation of coercive force as a function of temperature. The magnetocrystalline anisotropy constant for nanocrystalline nickel-zinc ferrite is found to be an order of magnitude higher than that for the bulk material.

Item Type:	Article
Uncontrolled Keywords:	Ferrite; Coercivity; Magnetocrystalline anisotropy; crystal growth
Subjects:	Electronics
Divisions:	UNSPECIFIED
Depositing User:	Bidhan Chaudhuri
Date Deposited:	30 Jul 2012 07:00
Last Modified:	05 Mar 2016 14:48
URI:	http://cgcri.csircentral.net/id/eprint/1673

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