Table of Contents
Journal of Thermodynamics
Volume 2012, Article ID 892696, 4 pages
http://dx.doi.org/10.1155/2012/892696
Research Article

Temperature Dependence of the Raman Frequency of an Internal Mode for SiO2-Moganite Close to the α-β Transition

Department of Physics, Middle East Technical University, 06531 Ankara, Turkey

Received 15 August 2012; Accepted 26 October 2012

Academic Editor: Mario Amzel

Copyright © 2012 Mustafa Cem Lider and Hamit Yurtseven. 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 temperature dependence of the 501 cm−1 frequency of the vibrational mode is analyzed for SiO2-moganite. The experimental data for the heating and cooling cycles of moganite from the literature is used for our analysis. The coexistence of α-β moganite is obtained over a finite temperature interval, and the α-β moganite transition at around 570 K is studied, as observed experimentally.