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The large magnetoresistance of $La_{1-x}Sr_xCoO_3$ at low temperatures

Mahendiran, R and Raychaudhuri, AK and Chainani, A and Sarma, DD (1995) The large magnetoresistance of $La_{1-x}Sr_xCoO_3$ at low temperatures. In: Journal of Physics:Condensed Matter, 7 (43). L561-L565.

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We report here the resistivity $(\rho)$ and the magnetoresistance (MR) ofthe ferromagnetic perovsldte oxide system $La_{1-x}Sr_xCaO_3 (0.1<x<0.5)$ in a tempemure range down to 4.2 K and magnetic fields up to 6 T. The MR is positive for x = 0.5 and is negative For $x\leq 0.4$. We find that while in the metallic samples (x > 0.2) the magnitude of the MR is typically small (<10%), it is large in the composition range where $x\leq 0.2$. where the system is close to the metal-to-insulator transition. We compare these observations with those made for the $La_{1-x}Sr_xMnO_3$ system.

Item Type: Journal Article
Publication: Journal of Physics:Condensed Matter
Publisher: Institute of Physics
Additional Information: Copyright of this artcile belongs to Institute of Physics.
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 10 May 2007
Last Modified: 19 Sep 2010 04:35
URI: http://eprints.iisc.ac.in/id/eprint/10019

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