Structural properties of Fe3+ substituted yttrium iron garnet

The compositional dependence of structural parameters like cation distribution, lattice constant, X-ray density, bulk density, porosity, shrinkages and particle size have been studied for Y3xFe5xO12(x = 0.00, 0.05, 0.15 and 0.30) garnet system. It is found that substituted Fe3+ ions occupy dodecahed...

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Bibliographic Details
Published in:Indian journal of pure & applied physics 2004-02, Vol.42 (2), p.117-120
Main Authors: Vara, R P, Shah, H J, Pandva, M P, Chhantbar, M C, Modi, K B
Format: Article
Language:English
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Summary:The compositional dependence of structural parameters like cation distribution, lattice constant, X-ray density, bulk density, porosity, shrinkages and particle size have been studied for Y3xFe5xO12(x = 0.00, 0.05, 0.15 and 0.30) garnet system. It is found that substituted Fe3+ ions occupy dodecahedral sites while Fe2+ion concentration, determined through EDAX, occupy octahedral (a-) sites in the crystal structure. The values of lattice constant obtained from experimentally estimated cation distribution are not in agreement with measured values; suggest that practically Fe2+ ion substitution does not affect the lattice constant. All the parameters studied are interlinked having effect on transport properties.
ISSN:0019-5596