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Scaling behavior in the conductivity of alkali oxide glasses

Description: Although the frequency dependent conductivity, {sigma}({omega}), of ion-containing glasses displays power law dispersion ({sigma}({omega}) {approx} {omega}{sup n}) that can usually be described by a master curve, several findings have suggested that this scaling fails at low temperatures as indicated by a temperature dependence of the scaling exponent, n. The authors investigate this behavior in the frequency range between 1 Hz and 10{sup 6} Hz for a different materials including alkali metapho… more
Date: November 1, 1995
Creator: Sidebottom, D. L.; Green, P. F. & Brow, R. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Structure and optical properties of rare earth-doped zinc oxyhalide tellurite glasses

Description: Zinc tellurite glasses appear to be excellent candidates for hosting rare earth ions since they provide a low phonon energy environment to minimize non-radiative losses as well as possess good chemical durability and optical properties. The optical behavior of the rare earth ion can be manipulated by modifying its local environment in the glass host. The authors report measurements of the emission lifetime, optical absorption, and vibrational density of states of the glass system (ZnO){sub x}(Z… more
Date: October 1, 1997
Creator: Sidebottom, D. L.; Hruschka, M. A.; Potter, B. G. & Brow, R. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Optical properties of lanthanide-containing halide-modified zinc tellurite glasses

Description: As part of an ongoing investigation to characterize the properties and structure of Zn halide-Te oxide glasses, we report preliminary measurements of the optical properties of several Nd- and Er-doped tellurites. Measurements include fluorescence lifetimes and estimates of the theoretical radiative lifetimes (from traditional Judd-Ofelt analysis of optical absorption spectra) as well as phonon sideband studies sensitive to vibrational characteristics near the rare earth ion. Response of these o… more
Date: December 31, 1996
Creator: Sidebottom, D. L.; Hruschka, M. A.; Potter, B. G.; Brow, R. K. & Hudgens, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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