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

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

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
JournalCeramics International
DOIs
Publication statusAccepted/In press - 2020

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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