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Colossal magnetoresistance in epitaxial $La_(_1_-_x_-_y_)$$Na_y$$MnO_3$ thin film

Sahana, M and Singh, RN and Shivakumara, C and Vasanthacharya, NY and Hegde, MS and Subramanian, S and Prasad, V and Subramanyam, SV (1997) Colossal magnetoresistance in epitaxial $La_(_1_-_x_-_y_)$$Na_y$$MnO_3$ thin film. In: Applied Physics Letters, 70 (21). pp. 2909-2911.

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We have synthesized La0.83Na0.11MnO2.93 by heating La2O3 and MnCO3 in NaCl melt at 900 degrees C. The exact composition was arrived by analyzing each ion by an independent chemical method. The compound crystallized in a rhombohedral structure and showed an insulator-to-metal transition at 290 K. Epitaxial thin films were fabricated on LaAlO3 (100) using a pulsed laser deposition technique. The film also showed an insulator-to-metal transition at 290 K. Magnetoresistance [Delta R/R-0=(R-H-R-0)/R-0] was - 71% near the insulator-to-metal transition temperature of 290 K at 6 T magnetic field.

Item Type: Journal Article
Publication: Applied Physics Letters
Publisher: American Institute of Physics
Additional Information: Copyright of this article belongs to American Institute of Physics.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 11 Mar 2009 08:46
Last Modified: 19 Sep 2010 05:25
URI: http://eprints.iisc.ac.in/id/eprint/18709

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