Combustion synthesis and properties of Ln3Fe5O12 and yttrium aluminium garnets

Suresha, K and Patil, KC (1994) Combustion synthesis and properties of Ln3Fe5O12 and yttrium aluminium garnets. In: Journal of alloys and compounds, 209 (1-2). 203 -206 .

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Abstract

The rare earth iron garnets Ln3Fe5O12 and Y3AlxFe5-xO12, where x=1.0-5.0, and Y1.5Gd1.5Al0.2Fe4.8O12 have been prepared by the combustion of redox mixtures containing corresponding metal nitrates and oxalyl dihydrazide, i.e. C2H6N4O2 at 350-degrees-C. The solid combustion products are amorphous, submicrometre-sized powders which, on heating at 750-degrees-C for 3 h, yield crystalline single-phase garnets. The particle size of the garnets is below 1 mum and the surface area ranges from 16 to 90 m2 g-1. Yttrium iron garnet could be sintered to a density of more than 95% at 1200-degrees-C for 3 h, giving an average grain size of 3-5 mum.

Item Type:	Journal Article
Publication:	Journal of alloys and compounds
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	25 Mar 2011 08:43
Last Modified:	25 Mar 2011 08:43
URI:	http://eprints.iisc.ac.in/id/eprint/36294

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