Application of simulations to thermodynamic properties of materials for magnetic refrigeration: A calorimetric approach to material’s magnetocaloric parameters

Beltran-Lopez, J. ; Sazatornil, M. ; Palacios, E. (Universidad de Zaragoza) ; Burriel, R. (Universidad de Zaragoza)

Resumen: A magnetic refrigeration system is a complex system that involves the magnetocaloric effect (MCE) and the heat transfer problems working in a coupled manner. For this purpose, characterization of materials showing MCE is needed. Calorimetric characterization allows the obtention of thermodynamic variables needed for a precise quantification of this effect. More specifically, in systems with continuous magnetic field variation, in order to calculate the heat generation due to MCE, the knowledge of their magnetocaloric parameters—adiabatic temperature change (Formula presented.) and isothermal entropy change (Formula presented.)—and the heat capacity (Formula presented.), for every temperature and magnetic field present is needed. In this work, (Formula presented.) family materials have been either characterized or interpolated and used in numerical simulations in COMSOL Multiphysics™ software. The characterization was carried out with measurements of (Formula presented.), (Formula presented.) and (Formula presented.) and the calculation of other derived parameters, at different temperatures and magnetic fields.

Idioma: Inglés

DOI: 10.1007/s10973-016-5268-2

Año: 2016

Publicado en: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 125, 2 (2016), 579–583
ISSN: 1388-6150

Factor impacto JCR: 1.953 (2016)

Categ. JCR: THERMODYNAMICS rank: 20 / 58 = 0.345 (2016) - Q2 - T2
Categ. JCR: CHEMISTRY, ANALYTICAL rank: 41 / 76 = 0.539 (2016) - Q3 - T2
Categ. JCR: CHEMISTRY, PHYSICAL rank: 85 / 145 = 0.586 (2016) - Q3 - T2

Factor impacto SCIMAGO: 0.608 - Physical and Theoretical Chemistry (Q2) - Condensed Matter Physics (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E100
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2013-44063-R

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)