Table of Contents
International Journal of Metals
Volume 2013 (2013), Article ID 216926, 4 pages
http://dx.doi.org/10.1155/2013/216926
Research Article

Spectroscopic Study of Al3+-Substituted Strontium Hexaferrite

1Department of Physics, Institute of Science, R. T. Road, Nagpur, Maharashtra 440001, India
2Dhote Bandhu Science College, Gondia, Maharashtra 441614, India
3Department of Physics, R. T. M. Nagpur University, Nagpur, Maharashtra 440033, India

Received 26 March 2013; Accepted 8 November 2013

Academic Editor: Yuanshi Li

Copyright © 2013 M. Y. Salunkhe et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The substituted Y type hexaferrites (where  = 2, 4, 6, 10) are prepared by standard ceramic technique. The infrared absorption spectra of the prepared compounds are studied in the range 400 cm−1 to 4600 cm−1. These spectra are used to locate the vibrational ranges due to substituted cations with the nearest oxygen layers and also to understand the band positions attributed to the lattice sites. The absorption regions found around 460 cm−1 and 600 cm−1 are the common features of all spinel ferrites. Both X-ray and IR spectroscopic studies in these ferrites do not detect the presence of Fe2+. Also with increase in aluminium substitution, the higher frequency bands start disappearing. This may be due to reduced vibrations of trivalent cations Fe–O bonds at both octahedral and tetrahedral sites which in turn affect Fe3+–O2−–Fe3+ superexchange interactions present in the structure.