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dc.contributor.authorSankarappa T
dc.contributor.authorDevidas G.B
dc.contributor.authorPrashant Kumar M
dc.contributor.authorKumar S
dc.contributor.authorVijaya Kumar B.
dc.date.accessioned2020-06-12T15:04:33Z-
dc.date.available2020-06-12T15:04:33Z-
dc.date.issued2009
dc.identifier.citationJournal of Alloys and Compounds , Vol. 469 , 43832 , p. 576 - 579en_US
dc.identifier.uri10.1016/j.jallcom.2008.02.012
dc.identifier.urihttp://gukir.inflibnet.ac.in:8080/jspui/handle/123456789/4684-
dc.description.abstractTwo different series of vanadophosphate glasses doped with sodium and sodium-potassium were investigated for ac conductivity in the frequency range 500 Hz to 500 kHz and temperature range 300-660 K. Mott's small polaron hopping has been used to explain the temperature dependence of electrical conductivity. The change over of conduction mechanism, occurring at 0.16 mole fraction of Na2O from predominantly electronic to ionic has been observed in single alkali glasses. The mixed alkali effect, in terms of electrical conductivity and activation energies associated with it, has been observed to be occurring at 0.12 mole fraction of second alkali (K2O) content in mixed alkali glasses. The results have been discussed. © 2008 Elsevier B.V. All rights reserved.en_US
dc.subjectAlkali ions
dc.subjectMixed alkali effect
dc.subjectMixed conductivity
dc.subjectMott's small polaron hopping
dc.subjectPhosphate glasses
dc.titleAC conductivity studies in single and mixed alkali vanadophosphate glassesen_US
dc.typeArticle
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