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On tuning the magnetocaloric effect in Ni-Mn-In Heusler alloy ribbons with thermal treatment

Abstract: An improvement of the magnetocaloric response in Ni 50.0Mn 35.5In 14.5 Heusler alloy ribbons after annealing is reported. Furthermore, the phase of the annealed sample at room temperature can be austenite or martensite depending on the annealing conditions. Short-time thermal treatments during 10 min at temperatures of 1048 and 1073 K enhance both the maximum values of structural and magnetic entropy changes (?S M pk), and the refrigerant capacity (RC) of the as-spun sample. For a magnetic field value of 3 T, an enhancement in ?S M pk of ?175% and ?40%, and in RC of ?25% and ?20%, have been obtained in the temperature ranges where these structural and magnetic entropy changes take place, respectively. In addition, the ?S M pk values have been calculated using both the Clausius-Clapeyron equation and the Maxwell relation, showing a good agreement between them in the main existing first-order phase transitions.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Fuente: Journal of Alloys and Compounds, 2012, 545, 216-221

Editorial: Elsevier Ltd

 Fecha de publicación: 25/12/2012

Nº de páginas: 6

Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.jallcom.2012.07.151

ISSN: 0925-8388,1873-4669

 Proyecto español: MAT2010-20798-C05-04 ; MAT2009-13108-C02-01-02

Url de la publicación: https://doi.org/10.1016/j.jallcom.2012.07.151

Autoría

CABALLERO FLORES, RAFAEL

SÁNCHEZ FERNÁNDEZ, TATIANA

ROSA, WAGNER DE OLIVEIRA DA

GARCÍA GARCÍA, JOSÉ OVIDIO

DAVID SERANTES ABALO

PRIDA PIDAL, VÍCTOR MANUEL DE LA

ESCODA ACERO, MARÍA LLUÏSA

SUÑOL MARTÍNEZ, JOAN JOSEP

HERNANDO GRANDE, BLANCA