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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/1497

Title: Heat capacity and magnetoresistance in Dy(Co,Si)(2) compounds
Authors: SINGH, NK
SURESH, KG
NIGAM, AK
MALIK, SK
Keywords: metamagnetism
Issue Date: 2005
Publisher: AMER INST PHYSICS
Citation: JOURNAL OF APPLIED PHYSICS,97(10)10A301-10A303
Abstract: Magnetocaloric effect and magnetoresistance have been studied in Dy(Co1-xSx)(2) (x=0, 0.075, and 0.15) compounds. Magnetocaloric effect has been calculated in terms of adiabatic temperature change (Delta T-ad) as well as isothermal magnetic entropy change (Delta S-M) using the heat-capacity data. The maximum values of Delta S-M and Delta T-ad for DyCo2 are found to be 11.4 JKg(-1) K-1 and 5.4 K, respectively. Both Delta S-M and Delta T-ad decrease with Si concentration, reaching values of 5.4 JKg(-1) K-1 and 3 K, respectively for x=0.15. The maximum magnetoresistance is found to be about 32% in DyCo2, which decreases with increase in Si. These variations are explained on the basis of itinerant electron metamagnetism occurring in these compounds. (c) 2005 American Institute of Physics.
URI: http://dx.doi.org/10.1063/1.1844932
http://dspace.library.iitb.ac.in/xmlui/handle/10054/14647
http://hdl.handle.net/100/1497
ISSN: 0021-8979
Appears in Collections:Proceedings papers

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