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Advances in Condensed Matter Physics
Volume 2017, Article ID 5389573, 8 pages
https://doi.org/10.1155/2017/5389573
Research Article

Lattice Dynamics and Transport Properties of Multiferroic DyMn2O5

1Department of Physics, Bahauddin Zakariya University, Multan 60800, Pakistan
2Nanoscience and Technology Department, National Center for Physics, Quaid-i-Azam University Campus, Islamabad 45320, Pakistan
3Department of Civil Engineering, Bahauddin Zakariya University, Multan 60800, Pakistan

Correspondence should be addressed to Javed Ahmad; moc.liamg@damha.j.rd

Received 12 December 2016; Revised 16 February 2017; Accepted 20 February 2017; Published 7 March 2017

Academic Editor: Mohindar S. Seehra

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 have investigated the optical and electrical properties of polycrystalline DyM synthesized by sol-gel method. Analysis of the reflectivity spectrum has led to the observation of 18 infrared (IR) active phonon modes out of 36 predicted ones. We discuss the results in terms of different phonon bands originated as a result of atomic vibrations. Moreover, the optical energy band gap of  eV has been estimated from optical conductivity spectrum. The energy band gap and optical transitions were also determined from UV-visible absorption spectrum and band gap of  eV was estimated. Moreover, DC electrical resistivity shows the p-type polaronic conduction above room temperature.