Evolution of structural ({\alpha}) relaxation-time anomalies in GexSe1-x Chalcogenide glasses
Disordered Systems and Neural Networks
2015-05-05 v1
Abstract
We examine enthalpy relaxation across the chalcogenide glass series GexSe1-x, prepared over close-by compositions using conventional melt-quenching technique. We estimate the timescale {\tau}(Tg) characterizing enthalpic relaxation near the kinetic glass transition temperature, using the non-reversing heat-flow data obtained from MDSC (modulated differential scanning calorimetry) measurements over a wide range of compositions (2.1 {\lessthanequalto} r {\lessthanequalto} 2.8, r = 2x+2). Anomalies in the enthalpy-relaxation characteristic-times {\tau}g(r) are identified as marking rigidity-transitions encountered in successive Ge-doping of polymeric selenium chains.
Cite
@article{arxiv.1505.00331,
title = {Evolution of structural ({\alpha}) relaxation-time anomalies in GexSe1-x Chalcogenide glasses},
author = {Deepak Sharma and Sujatha Sampath and A. M. Awasthi},
journal= {arXiv preprint arXiv:1505.00331},
year = {2015}
}
Comments
10 pages, 3 figures, 30 references