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

Mamatha D. Daivajna; Ashok Rao; G. S. Okram

doi:10.1016/j.jmmm.2015.04.025

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

Mamatha D. Daivajna, Ashok Rao^*, G. S. Okram

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

In the present investigation detailed electrical, magnetic and thermoelectric measurements on Bi-doped L_0.6-xBi_xSr_0.4MnO₃ (0≤x≤0.3) manganites have been done. All the samples are single phased. The metal-insulator transition temperatures (T_MI) as well as the Curie temperature (T_C) 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 language	English
Pages (from-to)	90-95
Number of pages	6
Journal	Journal of Magnetism and Magnetic Materials
Volume	388
DOIs	https://doi.org/10.1016/j.jmmm.2015.04.025
Publication status	Published - 15-08-2015

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2015.04.025

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

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.",

author = "Daivajna, {Mamatha D.} and Ashok Rao and Okram, {G. S.}",

year = "2015",

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journal = "Journal of Magnetism and Magnetic Materials",

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T1 - Electrical, thermal and magnetic studies on Bi-substituted LSMO manganites

AU - Daivajna, Mamatha D.

AU - Rao, Ashok

AU - Okram, G. S.

PY - 2015/8/15

Y1 - 2015/8/15

N2 - 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.

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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VL - 388

SP - 90

EP - 95

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -

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

Abstract

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