Impedance spectroscopic investigation on electrical conduction and relaxation in manganese substituted pyrochlore type semiconducting oxides

dc.contributor.author	Sumi, S
dc.contributor.author	Prabhakar Rao, P
dc.contributor.author	Peter Koshy
dc.date.accessioned	2016-06-21T06:24:45Z
dc.date.available	2016-06-21T06:24:45Z
dc.date.issued	2015-05
dc.identifier.citation	Ceramics International 41(4):5992-5998,May 2015	en_US
dc.identifier.uri	http://hdl.handle.net/123456789/2324
dc.description.abstract	The effectofsimultaneoussubstitutionsofMninbothAandBsitesofthepyrochloretypesemiconductingoxides:(CaCe1 2xMn2x) (Sn1 xMnxINb)O7 δ (x¼0, 0.1,0.2,0.3and0.4)ontheelectricalconductionandrelaxationwasstudiedindetailusingimpedanceanalysisasa function offrequencyoverawiderangeoftemperature.Impedanceandmodulusanalysisclearlyexplaintherelaxationinthesematerialsandits dependence onMnconcentration.GrainboundarydominantelectricalcharacteristicshavebeenobservedwithprogressiveMnsubstitution. Correlated barrierhoppingmodelwassuccessfullyappliedforexplainingtheconductionmechanisminthesecompounds.Variationofhopping parameters withMnsubstitutioninthesematerialsindicatesstrongdependenceonthegrainandgrainboundarycontributions.Thisinsighttothe conduction mechanismofthesystemoffersintuningtheelectricalpropertiesfordesiredapplicationssuchasNTCthermistors	en_US
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.subject	Impedance; Electricalconductivity;Electricalproperties	en_US
dc.title	Impedance spectroscopic investigation on electrical conduction and relaxation in manganese substituted pyrochlore type semiconducting oxides	en_US
dc.type	Article	en_US