Dielectric properties of transition metal oxide glasses

Murawski, L.; Barczyński, R.J.

doi:10.1016/0022-3093(95)00677-x

Cited by 66 publications

(27 citation statements)

References 17 publications

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“…8), this maximum lies at frequencies less than 50 Hz. Such behaviour is not only present in this class of materials, but is also observed in (V 2 O 5 ) x (P 2 O 5 ) 1--x glasses [27]. Figure 9 shows the relation between s dc for the glasses and reciprocal temperature.…”

Section: Dielectric Constantmentioning

confidence: 93%

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

El‐Desoky

Kashif

2002

phys. stat. sol. (a)

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The electrical properties of xCaO–(20 — x)BaO–20Fe2O3–60P2O5 glasses with x = 0, 5, 10, 15 and 20 mol% have been studied in the frequency range 400 Hz–200 kHz and over a temperature range 323–593 K. The ac conductivity as a function of temperature was divided into two domains, one where the absolute magnitude of the ac conductivity was close to the dc conductivity and another where it was larger than the dc conductivity. At the same temperature, the dc conductivity varied only slightly in glasses with different CaO and BaO content. It is concluded that the conductivity in these mixed CaO and BaO iron phosphate glasses is electronic and depends upon the Fe2+/(Fe2+ + Fe3+) ratio. In the high‐temperature region above θD/2 (where θD is the Debye temperature) the Mott model of small polaron hopping (SPH) between nearest neighbours is consistent with the conductivity data, while at low temperature (below θD) the Greaves intermediate variable‐range hopping (VRH) model is found to be appropriate. The electrical conduction of the glasses is confirmed to be non‐adiabatic SPH. Mössbauer spectral analysis indicates the presence of both Fe2+ and Fe3+ ions.

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Section: Dielectric Constantmentioning

confidence: 93%

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

El‐Desoky

Kashif

2002

phys. stat. sol. (a)

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“…This behavior indicates a Debye-type dielectric dispersion [67]. On the other hand, the usual behavior of increasing ' with temperature may be due to a decrease in bond energies and dissociation of more alkali cations from their sites, and the consequent increase in diffusion or oscillation process through the zinc oxide matrix [68].…”

Section: Dielectric Study: a Permittivity And Loss Studiesmentioning

confidence: 97%

Investigations on electrical conductivity and dielectric properties of Na doped ZnO synthesized from sol gel method

Tabib¹,

Sdiri²,

Elhouichet

et al. 2015

Journal of Alloys and Compounds

135

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“…This transfer mechanism was first proposed by Pollack [4] for chalcogenide glasses and later was applied to a wide class of materials by other authors [5,6]. We can assume the existence of a hopping transfer mechanism for charge carriers in proustite crystals, in which silver ions make thermally activated jumps through the lattice.…”

Section: Resultsmentioning

confidence: 99%

Charge transport processes in proustite crystals Ag₃AsS₃

Guniya

Castro

Shadrin

2016

J. Phys.: Conf. Ser.

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The electro-optic effect in proustite (Ag 3 AsS 3 ) J Warner -Thermal self-focusing in a proustite crystal and its thermalproperties Vyacheslav M Gordienko, V G Kolomiets and P I Chernega Abstract. Structural characteristics and charge transfer processes in Ag 3 AsS 3 crystals were studied by dielectric spectroscopy and scanning electron microscopy methods; the relaxation parameters of the system were evaluated.

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Dielectric properties of transition metal oxide glasses

Cited by 66 publications

References 17 publications

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

Investigations on electrical conductivity and dielectric properties of Na doped ZnO synthesized from sol gel method

Charge transport processes in proustite crystals Ag₃AsS₃

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Dielectric properties of transition metal oxide glasses

Cited by 66 publications

References 17 publications

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

Investigations on electrical conductivity and dielectric properties of Na doped ZnO synthesized from sol gel method

Charge transport processes in proustite crystals Ag3AsS3

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Product

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Charge transport processes in proustite crystals Ag₃AsS₃