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Title: Structural and electrical transport properties of La{sub 0.8}Sm{sub 0.05}K{sub 0.15}MnO{sub 3} manganites

Polycrystalline sample of single-phase La{sub 0.8}Sm{sub 0.05}K{sub 0.15}MnO{sub 3} perovskite compound have been synthesized by solid-state reaction route. X-ray diffraction patterns accompanied by Rietveld–refined crystal structure parameters reveal the rhombohedral structure with space group R 3C. Electrical resistivity infers transition from metallic to insulator phase at 537 K. The application of magnetic field of 8 T, suppresses the resistivity. The metallic resistivity is retraced by considering electron–phonon, electron–electron and electron-spin-fluctuation interactions while insulating behaviour is analysed with small polaron conduction model.
Authors:
 [1] ;  [2] ;  [3]
  1. School of Physics, Vigyan Bhawan, Devi Ahilya University, Khandwa Road Campus, Indore-452001, India and Acropolis Technical Campus, Near Tillore Village, Rala Mandal, Indore-452020 (India)
  2. School of Physics, Vigyan Bhawan, Devi Ahilya University, Khandwa Road Campus, Indore-452001, India and Indore Institute of Science and Technology, Pithampur Road, Rau, Indore-453331 (India)
  3. School of Physics, Vigyan Bhawan, Devi Ahilya University, Khandwa Road Campus, Indore-452001 (India)
Publication Date:
OSTI Identifier:
22269347
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ELECTRIC CONDUCTIVITY; FLUCTUATIONS; INTERACTIONS; MAGNETIC FIELDS; PEROVSKITE; POLYCRYSTALS; SOLIDS; SPACE GROUPS; TRIGONAL LATTICES; X-RAY DIFFRACTION