UNSPECIFIED (1998) A Mossbauer study of Fe2O3Cr2O3 nanocrystals dispersed in a silica matrix. [Journal Item]

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Abstract

A series of alpha-Fe2-xCrxO3 nanocrystals, where 0 less than or equal to x less than or equal to 1.66, were produced at room temperature using an inorganic sol-gel approach, Aqueous dispersions of these nanocrystals were used to impregnate amorphous silica matrices and the resulting dried and fired materials were studied using Mossbauer spectroscopy. The spectra of the dried and fired nanocrystals consisted of single doublets which showed that even on firing to 600 degrees C, the nanocrystals retained their superparamagnetic properties, indicating no clustering or agglomeration of the crystallites as occurs in the undispersed material. (C) 1998 Elsevier Science B.V. All rights reserved.

Item Type:	Journal Item
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics
Journal or Publication Title:	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Publisher:	ELSEVIER SCIENCE BV
ISSN:	0304-8853
Date:	March 1998
Volume:	183
Number:	1-2
Number of Pages:	4
Page Range:	L1-L4
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/15906

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