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Metastable magnetization behavior of magnetocaloric R6Co1.67Si3 (R=Tb and Nd) compounds

TitleMetastable magnetization behavior of magnetocaloric R6Co1.67Si3 (R=Tb and Nd) compounds
Publication TypeJournal Article
Year of Publication2010
AuthorsHaldar A, Singh NK, Suresh KG, Nigam AK
Journal TitlePhysica B-Condensed Matter
Volume405
Pages3446-3451
Date Published8/15
ISBN Number0921-4526
Accession NumberISI:000280542600047
Keywordsmagnetic relaxation, magnetocaloric effect, magnetoresistance, Ternary, x-ray-diffraction
Abstract

Magnetic field and time induced steps have been observed in the recently discovered ternary suicide R6CO1.67Si3. Huge relaxation steps are observed across different loops in the low temperature magnetization isotherms. Giant relaxation present in this system indicates the existence of incubation time to get the saturated moment at a certain field. Measurement protocol sensitive magnetization behavior observed in this system may arise from the strong magnetostructural coupling and/or magnetic frustration. Electrical resistivity and magnetoresistance also reflect the magnetic state of the compound. Magnetocaloric effect is found to be large at temperatures close to the magnetic transition temperature. (C) 2010 Elsevier B.V. All rights reserved.
URL<Go to ISI>://000280542600047
DOIDoi 10.1016/J.Physb.2010.05.021