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Title

Direct Measurement of the Magnetocaloric Effect in Gd5Si2Ge1.9Ga0.1

AuthorsPalacios, Elias; Wang, GaoFeng; Burriel, Ramón
Issue Date2010
PublisherInstitute of Physics Publishing
CitationJournal of Physics: Conference Series 200: 092011 (2010)
AbstractDoping with some metals (Fe, Cu, Ga, Mn, Al) reduces or removes the strong thermal hysteresis in the giant magnetocaloric alloys Gd5(SixGe1−x)4. We present heat capacity and direct measurements of the isothermal entropy change, ΔST, and adiabatic temperature increment, ΔTS, of Gd5Si2Ge1.9Ga0.1. TC = 293.6 ± 0.2 K is quite higher than in the non-substituted alloys and similar to the values in the Si rich compounds (i.e. x > 0.5). The results indicate that even this small addition of Ga makes the transition of second-order type, as a usual magnetic transition in the orthorhombic phase. The magnetocaloric parameters are lower than in the non-substituted compound and comparable to those for pure Gd.
DescriptionEl pdf del artículo es la versión post-print.-- et al.
URIhttp://hdl.handle.net/10261/52597
DOI10.1088/1742-6596/200/9/092011
Identifiersdoi: 10.1088/1742-6596/200/9/092011
issn: 1742-6588
e-issn: 1742-6596
Appears in Collections:(ICMA) Artículos
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