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dc.creatorRomero Landa, Francisco Javieres
dc.creatorGallardo Cruz, María del Carmenes
dc.creatorMartín Olalla, José Maríaes
dc.creatordel Cerro Gonzalez, Jaimees
dc.date.accessioned2022-01-17T15:58:37Z
dc.date.available2022-01-17T15:58:37Z
dc.date.issued2021-09-28
dc.identifier.citationRomero Landa, F.J., Gallardo Cruz, M.d.C., Martín Olalla, J.M. y del Cerro Gonzalez, J. (2021). Experimental method to determine specific heat capacity and transition enthalpy at a first-order phase transition: Fundamentals and application to a Ni-Mn-In Heusler alloy. Thermochimica Acta, 706, 179053.
dc.identifier.issn0040-6031es
dc.identifier.urihttps://hdl.handle.net/11441/128919
dc.description.abstractA new method that characterizes thermal properties during a first-order phase transition is described. The technique consists in exciting the sample by a series of constant frequency thermal pulses which one in every N pulses –N is a small number like four—being exceedingly large in amplitude. This pulse induces phase transformation which is inhibited during the following smaller pulses due to thermal hysteresis. That way the specific heat capacity for a given mixture of phases can be determined. The results obtained are independent of experimental parameters like the rate and the amplitude of the pulses, unlike what happens in other calorimetric techniques. The method also provides the enthalpy excess by analysing the energy balance between the dissipated heat and the heat flowing during each pulse of measurement. The protocol is tested to analyse the phase transitions of a Heusler alloy Ni50.53Mn33.65In15.82. The paramagnetic-ferromagnetic transition for the austenite phase is continuous and the specific heat capacity shows a lambda anomaly. The martensitic phase transition shows a first-order character and the specific heat capacity follows a step-like behaviour. Previous article in issuees
dc.formatapplication/pdfes
dc.format.extent8es
dc.language.isoenges
dc.publisherElsevieres
dc.relation.ispartofThermochimica Acta, 706, 179053.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectspecific heat; enthalpy; latent heat; phase transition; heusler alloyes
dc.titleExperimental method to determine specific heat capacity and transition enthalpy at a first-order phase transition: Fundamentals and application to a Ni-Mn-In Heusler alloyes
dc.typeinfo:eu-repo/semantics/articlees
dcterms.identifierhttps://ror.org/03yxnpp24
dc.type.versioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.contributor.affiliationUniversidad de Sevilla. Departamento de Física de la Materia Condensadaes
dc.relation.publisherversionhttps://doi.org/10.1016/j.tca.2021.179053es
dc.identifier.doi10.1016/j.tca.2021.179053es
dc.contributor.groupFQM-130es
idus.validador.notaGolden OA sufragado por la US en el marco del convenio con Elsevier.es
dc.journaltitleThermochimica Actaes
dc.publication.volumen706es
dc.publication.initialPage179053es

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