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Advances in Materials Science and Engineering
Volume 2017, Article ID 3040254, 7 pages
https://doi.org/10.1155/2017/3040254
Research Article

Lattice Dynamics of Gd1−xYxMn2O5 Investigated by Infrared Spectroscopy

Department of Physics, Bahauddin Zakariya University, Multan 60800, Pakistan

Correspondence should be addressed to Syed Hamad Bukhari; moc.liamg@damah.irahkub

Received 7 February 2017; Revised 16 May 2017; Accepted 24 May 2017; Published 21 June 2017

Academic Editor: Peter Majewski

Copyright © 2017 Javed Ahmad 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

We present infrared (IR) reflectivity of with = 0, 0.2, 0.4, 0.6, 0.8, and 1 in the frequency range 30–1000 cm−1. A total of 18 IR active phonons were observed for Gd () and three additional phonons have been observed with increasing , marking a total of 21 phonons in (). A systematic investigation was performed to map out the structural distortion through the lattice vibration and discuss the consequences of frequency shifts in phonon modes. In addition, we have calculated the real part of optical conductivity () which reflects the semiconducting nature of .