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Observation of reentrant spin glass behavior in LaCo0.5Ni0.5O3

Viswanathan, M and Kumar, PS Anil (2009) Observation of reentrant spin glass behavior in LaCo0.5Ni0.5O3. In: Physical Review B, 80 (1). pp. 1-4.

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Official URL: http://prb.aps.org/abstract/PRB/v80/i1/e012410

Abstract

The magnetic and transport properties of LaCo0.5Ni0.5O3 have been studied. The dc magnetization and the ac susceptibility studies suggest the presence of a magnetic-phase transition from a ferromagnetic (FM) to a spin glass phase at a low temperature. This type of reentrant spin-glass (RSG) behavior attached to a long-range ordered ferromagnet is observed in this system. A magnetoresistance of ~10% is observed at 5 K which is unsaturated up to 11 Tesla suggests the presence of antiferromagnetic (AFM) interactions. It is likely that the competition between such AFM interactions with FM interactions yield an RSG phase.

Item Type: Journal Article
Additional Information: copyright of this article belongs to American physical society.
Keywords: cobalt compounds; enhanced magnetoresistance; exchange interactions (electron); lanthanum compounds; magnetic susceptibility; magnetic transitions; magnetisation; spin glasses
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 06 Jan 2010 07:23
Last Modified: 19 Sep 2010 05:41
URI: http://eprints.iisc.ernet.in/id/eprint/22437

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