Mandal, P and Hassen, A and Choudhury, Pranab (2006) Transport properties of metallic La(1-x)Sr(x)CoO(3) (0.30 <= x <= 0.50) ferromagnet. Journal of Applied Physics, 100 (10). ISSN 0021-8979

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To elucidate the nature of transport mechanism below Curie temperature T(C), we have analyzed the temperature dependence of resistivity (rho) and thermopower (S) of metallic La(1-x)Sr(x)CoO(3) (0.30 <= x <= 0.50). At low temperature well below T(C) both rho and S exhibit T(2) behavior whereas over a temperature interval just below T(C), they show a T(4) dependence due to the scattering of charge carriers by magnetic fluctuations. These fluctuations can be suppressed by a magnetic field, leading to a negative bulk magnetoresistance in cobaltates and in other itinerant ferromagnets such as manganites and CrO(2). (c) 2006 American Institute of Physics.

Item Type: Article
Subjects: Electronics
Depositing User: Mrs Chandana Patra
Date Deposited: 27 Dec 2011 10:36
Last Modified: 04 Apr 2016 11:02

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