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

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In the present investigation detailed electrical, magnetic and thermoelectric measurements on Bi-doped L0.6-xBixSr0.4MnO3 (0≤x≤0.3) manganites have been done. All the samples are single phased. The metal-insulator transition temperatures (TMI) as well as the Curie temperature (TC) are both found to decrease with Bi-content. Magneto-resistance (MR) data shows that MR (%) increases with Bi-content thereby showing it can be used in magnetic memory based devices. Resistivity data shows that small polaron hopping (SPH) model is valid in high temperature regime. Low temperature resistivity data depicts that electron-electron scattering is mainly responsible for the conduction mechanism. High temperature thermoelectric power (TEP) data reaffirms the validity of SPH model.

Original languageEnglish
Pages (from-to)90-95
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume388
DOIs
Publication statusPublished - 15-08-2015

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Manganites
Gene Conversion
Magnetoresistance
magnetic storage
electrical resistivity
electrical measurement
magnetic measurement
Curie temperature
electron scattering
Metal insulator transition
Electron scattering
transition temperature
Thermoelectric power
insulators
conduction
Temperature
Superconducting transition temperature
metals
Data storage equipment
electrons

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "In the present investigation detailed electrical, magnetic and thermoelectric measurements on Bi-doped L0.6-xBixSr0.4MnO3 (0≤x≤0.3) manganites have been done. All the samples are single phased. The metal-insulator transition temperatures (TMI) as well as the Curie temperature (TC) are both found to decrease with Bi-content. Magneto-resistance (MR) data shows that MR ({\%}) increases with Bi-content thereby showing it can be used in magnetic memory based devices. Resistivity data shows that small polaron hopping (SPH) model is valid in high temperature regime. Low temperature resistivity data depicts that electron-electron scattering is mainly responsible for the conduction mechanism. High temperature thermoelectric power (TEP) data reaffirms the validity of SPH model.",
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Electrical, thermal and magnetic studies on Bi-substituted LSMO manganites. / Daivajna, Mamatha D.; Rao, Ashok; Okram, G. S.

In: Journal of Magnetism and Magnetic Materials, Vol. 388, 15.08.2015, p. 90-95.

Research output: Contribution to journalArticle

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AU - Daivajna, Mamatha D.

AU - Rao, Ashok

AU - Okram, G. S.

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AB - In the present investigation detailed electrical, magnetic and thermoelectric measurements on Bi-doped L0.6-xBixSr0.4MnO3 (0≤x≤0.3) manganites have been done. All the samples are single phased. The metal-insulator transition temperatures (TMI) as well as the Curie temperature (TC) are both found to decrease with Bi-content. Magneto-resistance (MR) data shows that MR (%) increases with Bi-content thereby showing it can be used in magnetic memory based devices. Resistivity data shows that small polaron hopping (SPH) model is valid in high temperature regime. Low temperature resistivity data depicts that electron-electron scattering is mainly responsible for the conduction mechanism. High temperature thermoelectric power (TEP) data reaffirms the validity of SPH model.

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