Constriction effect in the nearly constant loss of alkali metaphosphate glasses

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Abstract

We report measurements of the dielectric loss in a series of monovalent metaphosphate glasses at cryogenic temperatures. An analysis of the scaling properties of the dielectric response reveals a nonionic contribution to the loss present only in glasses for which the conduction cation is constricted by the oxide network. As a result, our effort to examine recent conflicting reports for the cation mass dependence of the nearly constant loss in ion-conducting, disordered materials has been obfuscated. Instead, it is shown how this nonionic contribution may explain additional conflicting observations for the nearly constant loss reported over the last 10 years.

Original languageEnglish
Article number134206
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number13
DOIs
StatePublished - 2005

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Alkalies
Cations
alkalies
constrictions
Positive ions
Glass
glass
Dielectric losses
Cryogenics
Oxides
cations
conduction
Ions
cryogenic temperature
dielectric loss
scaling
oxides
Temperature
ions

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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abstract = "We report measurements of the dielectric loss in a series of monovalent metaphosphate glasses at cryogenic temperatures. An analysis of the scaling properties of the dielectric response reveals a nonionic contribution to the loss present only in glasses for which the conduction cation is constricted by the oxide network. As a result, our effort to examine recent conflicting reports for the cation mass dependence of the nearly constant loss in ion-conducting, disordered materials has been obfuscated. Instead, it is shown how this nonionic contribution may explain additional conflicting observations for the nearly constant loss reported over the last 10 years.",
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