Metal-insulator transition and giant magnetoresistance in La1-xMnO3-delta thin films and superlattices

Manoharan, Sundar S and Hegde, MS and Satyalakshmi, KM and Prasad, V and Subramanyam, SV (1996) Metal-insulator transition and giant magnetoresistance in La1-xMnO3-delta thin films and superlattices. In: Symposium E on Structure and Properties of Metallic Thin Films and Multilayers, at the Spring Meeting of the European-Materials-Research-Society, MAY 22-26, 1995, STRASBOURG, FRANCE.

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Abstract

The first fabrication of self-doped La1-xMnO3-delta films which are unique among the other La(1-x)M(x)MnO(3) (M = Ca, Ba and Pb) thin films showing giant magnetoresistance is reported. Ag-doped La0.7MnO3-delta films were grown on LaAlO3[100] substrates. These films show ferromagnetic and metal-insulator transition at 220 K and exhibit giant magnetoresistance (GMR) with Delta R/R(o) = 85% and Delta R/R(H) > 550%. Without silver addition these self-doped films are non-magnetic, Enhancement in GMR up to 8% has been observed in superlattices having alternate magnetic and non-magnetic La1-xMnO3-delta layers.

Item Type:	Conference Paper
Publisher:	Elsevier science
Additional Information:	Copyright of this article belongs to Elsevier science.
Keywords:	Magnetic properties and measurements;Metals;Insulators; Superlattices
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:	03 May 2011 06:46
Last Modified:	03 May 2011 06:46
URI:	http://eprints.iisc.ac.in/id/eprint/37360

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