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Title: Huge Anisotropic Magnetoresistance In Epitaxial Sm{sub 0.53}Sr{sub 0.47}MnO{sub 3} Thin Films

Abstract

In the present work we have studied the variation of LFMR as a function of the angle ({theta}) between the applied magnetic field and the plane of the film. DC magnetron sputtering was used for film preparation on LSAT single crystal substrates from Sm{sub 0.55}Sr{sub 0.45}MnO{sub 3} targets synthesized by the solid state reaction route. X-ray diffraction confirmed the epitaxial nature of these films. These films have simultaneous ferromagnetic and metal insulator transition at {approx}91 K. These films exhibit enhanced low field colossal magnetoresistance {approx}99% at 3.6 kOe at 80 K. Huge anisotropy is observed in the MR, which decreases from {approx}80% to 6% as {theta} increases from 0 to 90 deg. The evolution of the resistance as a function of time and the magnetic field at a constant temperature (T{approx_equal}77 K) has also been studied.

Authors:
 [1];  [2];  [3];  [1]
  1. National Physical Laboratory (CSIR), Dr. K. S. Krishnan Marg, New Delhi-110012 (India)
  2. (India)
  3. Department of Physics and Astrophysics, University of Delhi, Delhi-110007 (India)
Publication Date:
OSTI Identifier:
21608186
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1349; Journal Issue: 1; Conference: 55. DAE solid state physics symposium 2010, Manipal (India), 26-30 Dec 2010; Other Information: DOI: 10.1063/1.3606052; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; ANISOTROPY; EPITAXY; MAGNETIC FIELDS; MAGNETORESISTANCE; MANGANATES; MONOCRYSTALS; SAMARIUM COMPOUNDS; SOLIDS; SPUTTERING; STRONTIUM COMPOUNDS; SUBSTRATES; TEMPERATURE DEPENDENCE; THIN FILMS; TIME DEPENDENCE; VARIATIONS; X-RAY DIFFRACTION; ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; CRYSTAL GROWTH METHODS; CRYSTALS; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; FILMS; MANGANESE COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; TRANSITION ELEMENT COMPOUNDS

Citation Formats

Srivastava, M. K., Department of Physics and Astrophysics, University of Delhi, Delhi-110007, Kaur, A., and Singh, H. K. Huge Anisotropic Magnetoresistance In Epitaxial Sm{sub 0.53}Sr{sub 0.47}MnO{sub 3} Thin Films. United States: N. p., 2011. Web. doi:10.1063/1.3606052.
Srivastava, M. K., Department of Physics and Astrophysics, University of Delhi, Delhi-110007, Kaur, A., & Singh, H. K. Huge Anisotropic Magnetoresistance In Epitaxial Sm{sub 0.53}Sr{sub 0.47}MnO{sub 3} Thin Films. United States. doi:10.1063/1.3606052.
Srivastava, M. K., Department of Physics and Astrophysics, University of Delhi, Delhi-110007, Kaur, A., and Singh, H. K. Fri . "Huge Anisotropic Magnetoresistance In Epitaxial Sm{sub 0.53}Sr{sub 0.47}MnO{sub 3} Thin Films". United States. doi:10.1063/1.3606052.
@article{osti_21608186,
title = {Huge Anisotropic Magnetoresistance In Epitaxial Sm{sub 0.53}Sr{sub 0.47}MnO{sub 3} Thin Films},
author = {Srivastava, M. K. and Department of Physics and Astrophysics, University of Delhi, Delhi-110007 and Kaur, A. and Singh, H. K.},
abstractNote = {In the present work we have studied the variation of LFMR as a function of the angle ({theta}) between the applied magnetic field and the plane of the film. DC magnetron sputtering was used for film preparation on LSAT single crystal substrates from Sm{sub 0.55}Sr{sub 0.45}MnO{sub 3} targets synthesized by the solid state reaction route. X-ray diffraction confirmed the epitaxial nature of these films. These films have simultaneous ferromagnetic and metal insulator transition at {approx}91 K. These films exhibit enhanced low field colossal magnetoresistance {approx}99% at 3.6 kOe at 80 K. Huge anisotropy is observed in the MR, which decreases from {approx}80% to 6% as {theta} increases from 0 to 90 deg. The evolution of the resistance as a function of time and the magnetic field at a constant temperature (T{approx_equal}77 K) has also been studied.},
doi = {10.1063/1.3606052},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1349,
place = {United States},
year = {2011},
month = {7}
}