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- W2526775248 abstract "In the present communication, we report the effect of Bi substitutionon structural,magneto-transport,magnetic and thermal properties of La0.65�xBixCa0.35MnO3 (0rxr0.2) compounds.Rietveldrefined XRDpatterns confirm that all the sample sare single phase and crystallize inrhombohedralsymmetrywith R-3C space group. It was observed from electrical and magnetic studies that with increasing Bi content boththe metal-insulat or transition temperature(TMI) and ferromagnetic–paramagnetic (FM–PM) transitiontemperature(TC) shift towards lower temperatures. Deviation of the temperature dependence of inversesusceptibility curves from the Curie–WeisslawsuggeststheexistenceofGriffiths-like phase.Theelec-trical resistivitydatawereanalyzedbyutilizingvarioustheoreticalmodels.Itisrevealedthattheelec-tron–electron scatteringisdominatinginthemetallicregion,whiletheinsulatingregioniswell-de-scribed bythepolaronhoppingmodel.Analysisofthermoelectricpowerdatafurtherrevealsthatthesmall polaronhopping(SPH)mechanismisoperativeinthehigh-temperatureinsulatingregime.TheentropychangeassociatedwiththeFM–PM transitionisfoundtodecreasewithincreasing x, which ispresumablyduetotheincreaseinmagneticinhomogeneitywithincreasingBicontent" @default.
- W2526775248 created "2016-10-07" @default.
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- W2526775248 date "2016-01-01" @default.
- W2526775248 modified "2023-09-26" @default.
- W2526775248 title "Magnetic in homogeneity and Griffiths phase in BisubstitutedLa0.65xBixCa0.35MnO3 manganites" @default.
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