Comparative analysis of magnetic and caloric determinations of the magnetocaloric effect in Mn0.99Co0.01As
Resumen: The results from direct and indirect determinations of the magnetocaloric parameters of Mn0.99Co0.01As have been analyzed. The isothermal entropy change (Delta ST) due to external magnetic field changes has been determined through direct measurements of the heat absorbed by the sample when the field is removed under isothermal conditions. It has also been calculated from isothermal magnetization and isofield heat capacity measurements. In addition to that, the adiabatic temperature change (Delta TS) has been obtained from direct measurements and from isofield heat capacity measurements. The different results of both Delta ST and Delta TS are compared. Due to the presence of a first-order phase transition, the studied sample exhibits giant magnetocaloric effect at room temperature. The observed maximum values, -Delta ST,max = 32.1 J/kg·K and Delta TS,max = 17.7 K for a field change from 0 to 6 T, suggest that the Co-doped MnAs compounds are promising candidates for the preparation of useful materials for magnetic refrigeration near room temperature.
Idioma: Inglés
DOI: 10.1051/epjconf/20147504003
Año: 2014
Publicado en: EPJ web of conferences 75 (2014), 04003 [4 pp]
ISSN: 2101-6275

Financiación: info:eu-repo/grantAgreement/ES/MICINN/CSD2007-00010
Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2007-61621
Tipo y forma: Article (Published version)
Área (Departamento): Física de la Materia Condensada (Departamento de Física de la Materia Condensada)

Creative Commons You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

Exportado de SIDERAL (2017-07-25-08:17:18)

Este artículo se encuentra en las siguientes colecciones:
Articles > Artículos por área > Física de la Materia Condensada

 Record created 2017-01-03, last modified 2017-07-25

Versión publicada:
Rate this document:

Rate this document:
(Not yet reviewed)