作者: D.K Durga , N Veeraiah
DOI: 10.1016/S0921-4526(02)01286-3
关键词:
摘要: Clear glasses of the system, ZnF2–As2O3–TeO2, containing different concentrations Cr2O3 (ranging from 0 to 0.6 wt%) were prepared. A number studies viz., differential thermal analysis, infrared spectra, optical absorption, ESR, magnetic susceptibility, thermoluminescence anddielectric properties (constant e; loss tan d; AC conductivity sAC over a range frequency andtemperature andd ielectric breakd own strength), on these carriedout as function chromium ion concentration. Results have been analysedin light varying oxid ation states ion; analysis indicates gradual conversion ions Cr 3+ state CrO4� structural units (that take part in network forming positions) glass network, when is present at higher (>0.3 matrix. r 2002 Elsevier Science B.V. All rights reserved. PACS: 61.43.Fs; 77.22.Gm