Electrical, thermal and magnetic studies on Bi-substituted LSMO manganites

Daivajna, Mamatha D and Rao, Ashok and Okram, G S (2015) Electrical, thermal and magnetic studies on Bi-substituted LSMO manganites. Journal of Magnetism and Magnetic Materials, 388. pp. 90-95.

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Abstract

In the present investigation detailed electrical, magnetic and thermoelectric measurements on Bi-doped L0.6�xBixSr0.4MnO3 (0rxr0.3) manganite shavebeen done.Allthesamplesaresinglephased.The metal-insulator transitiontemperatures(TMI) aswellastheCurietemperature(TC) arebothfoundto decrease withBi-content.Magneto-resistance(MR)datashowsthatMR(%)increaseswithBi-content therebyshowingitcanbeusedinmagneticmemorybaseddevices.Resistivitydatashowsthatsmall polaron hopping(SPH)modelisvalidinhightemperatureregime.Lowtemperatureresistivitydata depicts thatelectron–electron scatteringismainlyresponsiblefortheconductionmechanism.High temperaturethermoelectricpower(TEP)datareaffirms thevalidityofSPHmodel

Item Type: Article
Uncontrolled Keywords: Manganites,Electrical resistivity,Magnetization,Thermoelectric power
Subjects: Engineering > MIT Manipal > Physics
Depositing User: MIT Library
Date Deposited: 29 Jun 2015 09:34
Last Modified: 29 Jun 2015 09:34
URI: http://eprints.manipal.edu/id/eprint/143163

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