Structural, magnetic and magneto-transport properties of Bi0.7-xLaxSr0.3MnO3 manganites

Anita D. Souza; Sudhindra Rayaprol; M. S. Murari; Mamatha Daivajna

doi:10.1016/j.ceramint.2020.08.216

Structural, magnetic and magneto-transport properties of Bi_0.7-xLa_xSr_0.3MnO₃ manganites

Anita D. Souza, Sudhindra Rayaprol, M. S. Murari, Mamatha Daivajna

Department of Physics, Manipal Institute of Technology, Manipal

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

4 Citations (Scopus)

Abstract

In the present study, the structural, magnetic, and magneto-transport properties of Bi_0.7-xLa_xSr_0.3MnO₃ manganites have been investigated. Systematic replacement of Bi³⁺ with La³⁺, reduces the distortion in the crystal structure and the system transforms from antiferromagnetic insulating (AFMI) state to ferromagnetic metallic (FMM) state. For partial doping of La³⁺, the system shows a low temperature drop in ZFC which could be attributed to the spin-glass transition in addition to the antiferromagnetic ordering. dc electrical resistivity describes the insulating behavior of the system which is consistent with antiferromagnetic (AFM) ground state for partial La³⁺ doping. The activation energy estimated from the small polaron hopping model, shows a systematic decrease as a function of La³⁺ concentration. The observed results could be explained by considering the dilution of 6s lone pair character of Bi³⁺ with La³⁺ doping.

Original language	English
Journal	Ceramics International
DOIs	https://doi.org/10.1016/j.ceramint.2020.08.216
Publication status	Published - 01-01-2021

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2020.08.216

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title = "Structural, magnetic and magneto-transport properties of Bi0.7-xLaxSr0.3MnO3 manganites",

abstract = "In the present study, the structural, magnetic, and magneto-transport properties of Bi0.7-xLaxSr0.3MnO3 manganites have been investigated. Systematic replacement of Bi3+ with La3+, reduces the distortion in the crystal structure and the system transforms from antiferromagnetic insulating (AFMI) state to ferromagnetic metallic (FMM) state. For partial doping of La3+, the system shows a low temperature drop in ZFC which could be attributed to the spin-glass transition in addition to the antiferromagnetic ordering. dc electrical resistivity describes the insulating behavior of the system which is consistent with antiferromagnetic (AFM) ground state for partial La3+ doping. The activation energy estimated from the small polaron hopping model, shows a systematic decrease as a function of La3+ concentration. The observed results could be explained by considering the dilution of 6s lone pair character of Bi3+ with La3+ doping.",

author = "Souza, {Anita D.} and Sudhindra Rayaprol and Murari, {M. S.} and Mamatha Daivajna",

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AU - Souza, Anita D.

AU - Rayaprol, Sudhindra

AU - Murari, M. S.

AU - Daivajna, Mamatha

PY - 2021/1/1

Y1 - 2021/1/1

N2 - In the present study, the structural, magnetic, and magneto-transport properties of Bi0.7-xLaxSr0.3MnO3 manganites have been investigated. Systematic replacement of Bi3+ with La3+, reduces the distortion in the crystal structure and the system transforms from antiferromagnetic insulating (AFMI) state to ferromagnetic metallic (FMM) state. For partial doping of La3+, the system shows a low temperature drop in ZFC which could be attributed to the spin-glass transition in addition to the antiferromagnetic ordering. dc electrical resistivity describes the insulating behavior of the system which is consistent with antiferromagnetic (AFM) ground state for partial La3+ doping. The activation energy estimated from the small polaron hopping model, shows a systematic decrease as a function of La3+ concentration. The observed results could be explained by considering the dilution of 6s lone pair character of Bi3+ with La3+ doping.

AB - In the present study, the structural, magnetic, and magneto-transport properties of Bi0.7-xLaxSr0.3MnO3 manganites have been investigated. Systematic replacement of Bi3+ with La3+, reduces the distortion in the crystal structure and the system transforms from antiferromagnetic insulating (AFMI) state to ferromagnetic metallic (FMM) state. For partial doping of La3+, the system shows a low temperature drop in ZFC which could be attributed to the spin-glass transition in addition to the antiferromagnetic ordering. dc electrical resistivity describes the insulating behavior of the system which is consistent with antiferromagnetic (AFM) ground state for partial La3+ doping. The activation energy estimated from the small polaron hopping model, shows a systematic decrease as a function of La3+ concentration. The observed results could be explained by considering the dilution of 6s lone pair character of Bi3+ with La3+ doping.

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Structural, magnetic and magneto-transport properties of Bi_0.7-xLa_xSr_0.3MnO₃ manganites

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