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Magnetic entropy table-like shape in RNi2 composites for cryogenic refrigeration

dc.contributor.authorIbarra Gaytán, Pablo Jesús
dc.contributor.authorSánchez Llamazares, José Luis
dc.contributor.authorÁlvarez Alonso, Pablo
dc.contributor.authorSánchez Valdés, Cesar Fidel
dc.contributor.authorGorria, Pedro
dc.contributor.authorBlanco Rodríguez, Jesús Angel
dc.contributor.editorAmerican Institute of Physics
dc.date.accessioned2018-04-03T19:23:14Z
dc.date.available2018-04-03T19:23:14Z
dc.date.issued2015-05
dc.identifier.citationP. J. Ibarra-Gaytán, et al., Journal of Applied Physics 117, 17C116 (2015); https://doi.org/10.1063/1.4915480
dc.identifier.urihttp://hdl.handle.net/11627/3777
dc.description.abstract"We have investigated the magnetocaloric (MC) effect in a two-phase composite based on melt-spun ribbons of the intermetallic DyNi2 and TbNi2 Laves phases. The temperature dependence of the isothermal magnetic entropy change, Delta S-M(T), has been calculated for the biphasic system x(DyNi2) + y(TbNi2) with 0< x < 1 (i. e., y - 1 - x). The optimum MC properties, i. e., a Delta S-M(T) curve with table-like shape, has been found in the temperature interval of 18-44K for the composite with x = 0.4 and for values of the magnetic field change mu(o)Delta H - 2 and 5 T, in good agreement with the experimental data. The refrigerant capacity, RC, reaches 221(526) J kg(-1) with a temperature span delta T-FWHM of 32(41) K for mu(o)Delta H of 2(5) T, thus improving the values obtained for the individual RNi2 ribbons. Our findings constitute a good starting point to stimulate the search for new composites with enhanced MC properties at cryogenic temperatures."
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.classificationFÍSICA
dc.titleMagnetic entropy table-like shape in RNi2 composites for cryogenic refrigeration
dc.typearticle
dc.identifier.doihttps://doi.org/10.1063/1.4915480
dc.rights.accessAcceso Abierto


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