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Title: Synthesis and characterization of electron doped La{sub 0.85}Te{sub 0.15}MnO{sub 3} thin film grown on LaAlO{sub 3} substrate by pulsed laser deposition technique

We report the structural, morphological and magneto-transport properties of electron doped La{sub 0.85}Te{sub 0.15}MnO{sub 3} (LTMO) thin film grown on (001) LaAlO{sub 3} single crystal substrate by pulsed laser deposition (PLD). X-ray diffraction (XRD) results confirm that the film has good crystalline quality, single phase, and c-axis orientation. The atomic force microscopy (AFM) results have revealed that the film consists of grains with the average size in a range of 20–30 nm and root-mean square (rms) roughness of 0.27nm. The resistivity versus temperature measurement exhibits an insulator to metal transition (MIT). We have noticed a huge value of magnetoresistance (∼93%) close to MIT in presence of 8T field. X-ray photoemission spectroscopy confirms the electron doping and suggests that Te ions could be in the Te{sup 4+} state, while the Mn ions stay in the Mn{sup 2+} and Mn{sup 3+} valence state.
Authors:
;  [1] ;  [2] ; ;  [3]
  1. Department of Physics, Aligarh Muslim University, Aliagrh-202002 (India)
  2. Department of Physics, University of Pune, Ganeshkhind-411007, Pune (India)
  3. Department of Applied Physics, Z. H. College of Engg. & Tech. Aligarh Muslim University, Aliagrh-202002 (India)
Publication Date:
OSTI Identifier:
22490391
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1665; Journal Issue: 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINATES; ATOMIC FORCE MICROSCOPY; DOPED MATERIALS; ENERGY BEAM DEPOSITION; LANTHANUM COMPOUNDS; LASER RADIATION; MAGNETORESISTANCE; MANGANATES; MANGANESE IONS; MONOCRYSTALS; PHOTOELECTRON SPECTROSCOPY; PULSED IRRADIATION; ROUGHNESS; SUBSTRATES; SYNTHESIS; TELLURIUM IONS; THIN FILMS; VALENCE; X-RAY DIFFRACTION