Magnetic properties and tuneable magnetocaloric effect with large temperature span in GdCd1−xRux solid solutions. (May 2015)

• Record Type: Journal Article
• Authors: Li, Lingwei; Niehaus, Oliver; Johnscher, Michael; Pöttgen, Rainer
• Is Part Of: Intermetallics. Volume 60(2015:May)
• Page Start: 9
• Page End: 12
• Publication Date: 2015-05
• Subjects: A. Functional alloys (magnetic, electrical, biomedical) -- B. Magnetic properties; Intermetallic compounds -- Metallography -- Periodicals; Metallic glasses -- Periodicals; Composés intermétalliques -- Métallographie -- Périodiques; 669.94
• DOI: 10.1016/j.intermet.2015.01.005
• Languages: English
• ISSNs: 0966-9795

Abstract

Abstract: The magnetic properties and the magnetocaloric effect (MCE) in the GdCd1− x Ru x ( x = 0.1, 0.15, and 0.2) solid solutions have been systematically investigated. A large reversible MCE has been observed in GdCd1− x Ru x accompanied by a second order magnetic phase transition from paramagnetic to ferromagnetic at T C ∼ 149, 108, and 73 K for x = 0.1, 0.15, and 0.2, respectively. Under a field change from 0 to 7 T, the maximum values of magnetic entropy change (– ΔS M max ) are 5.6, 7.8, and 11.0 J/kg K for x = 0.1, 0.15, and 0.2, respectively, the corresponding values of the relative cooling power ( RCP ) are 889, 852, and 828 J/kg. The considerable reversible MCE and large RCP values together with the tuneable T M in a wide temperature range make the GdCd1− x Ru x solid solutions considerable for active magnetic-refrigeration. Highlights: GdCd1−x Rux solid solutions were synthesized by induction melting method. Magnetism and magnetocaloric effect (MCE) in GdCd1−x Rux were studied. Tuneable MCE with large temperature span in GdCd1−x Rux was observed. GdCd1−x Rux solid solutions are good candidates for active magnetic refrigeration.