Structural and electrical transport properties of La0.8Sm0.05K0.15MnO3 manganites
Abstract
Polycrystalline sample of single-phase La0.8Sm0.05K0.15MnO3 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 <overline>3</overline>C. 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.
- Publication:
-
Solid State Physics
- Pub Date:
- April 2014
- DOI:
- 10.1063/1.4873013
- Bibcode:
- 2014AIPC.1591.1508S