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Title: Effect of Fe3+ substitution on structural and macro-magnetic properties of yttrium iron garnet
Authors: Modi, Kunal B
Shah, H J
Trivedi, U N
Vara, R P
Chhantbar, M C
Joshi, H H
Issue Date: Dec-2003
Publisher: NISCAIR-CSIR, India
Abstract: The structural and bulk magnetic properties of Fe3+ substituted yttrium iron garnet with general formulaY3-xFe5+xO12 (x = 0.0, 0.05, 0.15,0.30 and 0.50) have been investigated by means of X-ray diffraction, EDAX, high field magnetization and low field a.c. susceptibility measurements. It is found that substituted Fe3+ ions occupy c-sites and increase in lattice constant for x> 0.30 is due to presence of Fe2+ ions, determined through EDAX, on a-sites. Variation of magneton number with x can be explained satisfactorily assuming the collinear spin ordering model and Neel temperature values deduced experimentally from a.c. suscepti bility measurements are in good agreement to those calculated theoretically.
Page(s): 502-506
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.10(6) [December 2003]

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