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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/7393

Title: Magnetic and magnetocaloric properties of SmxGd1-xMn2Si2
Authors: KUMAR, P
SINGH, NK
SURESH, KG
NIGAM, AK
Keywords: room-temperature applications
transition
refrigeration
mnas1-xsbx
Issue Date: 2007
Publisher: ELSEVIER SCIENCE SA
Citation: JOURNAL OF ALLOYS AND COMPOUNDS, 427(1-2), 42-45
Abstract: The magnetic and magnetocaloric properties of Gd1-xSmxMn2Si2 compounds with 0 < x <= I have been studied to determine their suitability as magnetic refrigerant materials. The rare earth ordering temperatures are found to decrease from 60 K for x = 0 to 37 K for x = 1. The temperature variations of magnetization under 'field-cooled' and 'zero-field-cooled' conditions are found to differ slightly, indicating a small thermomagnetic irreversibility. Magnetocaloric effect is calculated in terms of isothermal magnetic entropy change (Delta S-M) using the magnetization isotherms. The maximum values of Delta S-M are found to be 5.9 J kg(-1) K-1 in GdMn2Si2, and 3.4 J kg(-1) K-1 in SmMn2Si2. (c) 2006
URI: http://dx.doi.org/10.1016/j.jallcom.2006.03.025
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7393
http://hdl.handle.net/10054/7393
ISSN: 0925-8388
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