Journal ArticleDOI
DC conductivity of V2O5Bi2O3 glasses
Aswini Ghosh,B. K. Chaudhuri +1 more
TLDR
Semiconducting vanadium-bismuth oxide glasses have been prepared in the composition range 80-95 mol% V2O5 and the DC conductivity of the annealed glasses has been measured in the temperature range 80 −480 K and compared with those of phosphate and tellurite glasses as discussed by the authors.Abstract:
Semiconducting vanadium-bismuth oxide glasses have been prepared in the composition range 80–95 mol% V2O5 The DC conductivity of the annealed glasses has been measured in the temperature range 80–480 K and compared with those of phosphate and tellurite glasses The conductivity is sensitive to microstructure The data have been analysed in the light of models of polaronic hopping conduction Hopping of the polaron is shown to be adiabatic in nature Mott's T 1 4 analysis is made at low temperatureread more
Citations
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Journal ArticleDOI
Characterisation of semiconducting V2O5–Bi2O3–TeO2 glasses through ultrasonic measurements
TL;DR: In this paper, a transducer operated at the fundamental frequency of 5 MHz in the temperature range from 150 to 480 K was used to measure velocities, attenuation, elastic moduli, Poisson's ratio, Debye temperature and glass transition temperature.
Journal ArticleDOI
Memory switching in bismuth‐vanadate glasses
TL;DR: In this article, the electrical properties of thin blown films of V2O5-Bi2O3 glasses with 95-70 mol'% V 2O5 were studied in the temperature range 200-400 K.
Journal ArticleDOI
ac conductivity in Bi4Sr3Ca3CuyOx (y=0–5) and Bi4Sr3Ca3−zLizCu4Ox (z=0.1–1.0) semiconducting oxide glasses
TL;DR: In this paper, the universal power-law behavior for semiconducting oxides was studied over the wide temperature (77-450 K) and frequency (100-104 Hz) ranges.
Journal ArticleDOI
Influence of iron ions on the structural and magnetic properties of some zinc-phosphate glasses
TL;DR: In this paper, the structural and magnetic properties of glasses were investigated by means of X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, electron paramagnetic resonance (EPR) and magnetic susceptibility measurements.
Impurity Conduction at Low Concentrations.
TL;DR: In this article, the conductivity of an n-type semiconductor has been calculated in the region of low-temperature $T$ and low impurity concentration ${n}_{D}$.
References
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Electronic processes in non-crystalline materials
TL;DR: The Fermi Glass and the Anderson Transition as discussed by the authorsermi glass and Anderson transition have been studied in the context of non-crystalline Semiconductors, such as tetrahedrally-bonded semiconductors.
Journal ArticleDOI
Studies of polaron motion: Part II. The “small” polaron
TL;DR: In this article, the authors considered the case in which the electronic-overlap term of the total Hamiltonian is a small perturbation, and showed that the probability of off-diagonal transitions goes up exponentially with increasing temperature.
Journal ArticleDOI
Conduction in glasses containing transition metal ions
TL;DR: In this article, a discussion of conduction in glasses containing transition metal ions is presented, and the Miller-Abrahams term and polaron hopping term tend to zero, giving a decreasing slope of the ln p versus 1/T curve.
Journal ArticleDOI
Impurity Conduction at Low Concentrations
A. J. Miller,Elihu Abrahams +1 more
TL;DR: In this paper, the conductivity of an n-type semiconductor has been calculated in the region of low-temperature $T$ and low impurity concentration ${n}_{D}$.
Journal ArticleDOI
Transport Properties of Semiconducting Phosphate Glasses
M. Sayer,A. Mansingh +1 more
TL;DR: In this paper, the temperature and frequency dependence of conductivity, dielectric properties, infrared absorption, and electron-paramagnetic-resonance data are presented for semiconducting phosphate glasses based on oxides of Ti, V, Mn, Fe, Co, Ni, Cu, Mo, and W. The results suggest that the theory of small polaron hopping in the adiabatic approximation may be most appropriate for phosphate glasses.