Magnetic and magnetocaloric properties of SmxGd1-xMn2Si2

The magnetic and magnetocaloric properties of Gd1-xSmxMn2Si2 compounds with 0 < =x < =1 have been studied to determine their suitability as magnetic refrigerant materials. The rare earth ordering temperatures are found to decrease from 60K for x=0 to 37K for x=1. The temperature variations of...

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Veröffentlicht in:	Journal of alloys and compounds 2007-01, Vol.427 (1-2), p.42-45
Hauptverfasser:	KUMAR, Pramod, SINGH, Niraj K, SURESH, K. G, NIGAM, A. K
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic properties and materials Magnetically ordered materials: other intrinsic properties Magnetocaloric effect, magnetic cooling Physics
Online-Zugang:	Volltext
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Zusammenfassung:	The magnetic and magnetocaloric properties of Gd1-xSmxMn2Si2 compounds with 0 < =x < =1 have been studied to determine their suitability as magnetic refrigerant materials. The rare earth ordering temperatures are found to decrease from 60K for x=0 to 37K 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 (DeltaSM) using the magnetization isotherms. The maximum values of DeltaSM are found to be 5.9Jkg-1K-1 in GdMn2Si2 and 3.4Jkg-1K-1 in SmMn2Si2.
ISSN:	0925-8388 1873-4669
DOI:	10.1016/j.jallcom.2006.03.025