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Broad first-order magnetic entropy change curve in directionally solidified polycrystalline Ni-Co-Mn-In

dc.contributor.authorChen, Feng
dc.contributor.authorTong, Yunxiang
dc.contributor.authorLi, Li
dc.contributor.authorSánchez Llamazares, José Luis
dc.contributor.authorSánchez Valdés, Cesar Fidel
dc.contributor.authorMullner, Peter
dc.identifier.citationF. Chen, Y.X. Tong, L. Li, J.L. Sánchez Llamazares, C.F. Sánchez-Valdés, P. Müllner, Broad first-order magnetic entropy change curve in directionally solidified polycrystalline Ni-Co-Mn-In, Journal of Alloys and Compounds, Volume 727, 2017, Pages 603-609.es_MX
dc.description.abstract"We present the thermal dependence of the magnetic entropy change ΔSM(T) across the martensitic transformation for a polycrystalline sample, which was cut from a directionally solidified rod, with a nominal composition Ni42Co8Mn38In12 grown by the Bridgman-Stockbarger technique. This material combines a first-order martensitic transformation expanded over a very large working temperature range with a large magnetization change of ∼86 A m2 kg−1. Accordingly, for a magnetic field change of 5 T (2 T), the coupled magneto-structural transition gives rise to a broad magnetic entropy change curve across the reverse martensitic transformation with a moderate maximum value of 6.8 (3.0) J kg−1 K−1 and a full-width at half-maximum δTFWHM for the ΔSM(T) curve of 49 (43) K. Such a broad structural transition may be due to the effect of chemical segregation introduced by the directional solidification which can be enhanced by the non-uniform distribution of second phase particles. Accompanying with such a wide working temperature range, a large refrigerant capacity of 334 J kg−1 was obtained for a field change of 5 T."es_MX
dc.publisherElsevier B.V.es_MX
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.subjectFerromagnetic shape memory alloyes_MX
dc.subjectBroad martensitic transformationes_MX
dc.subjectMagnetocaloric propertieses_MX
dc.subjectWorking temperature rangees_MX
dc.subject.classificationArea::BIOLOGÍA Y QUÍMICA::QUÍMICAes_MX
dc.titleBroad first-order magnetic entropy change curve in directionally solidified polycrystalline Ni-Co-Mn-Ines_MX

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