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Magnetic and magnetocaloric properties of martensitic Ni2Mn1.4Sn0.6 Heusler alloy

Abstract: The evolutions of magnetic properties at low temperatures and the influence of magnetic field on the temperature dependence of specific heat in martensitic Ni2Mn1.4Sn0.6 Heusler alloy are studied. The frequency-dependent blocking temperature and considerable exchange bias below it are measured in the martensitic phase. From the analysis of the specific heat curves under magnetic field, a large inverse magnetocaloric effect manifested as the magnetic field induced rise of isothermal magnetic entropy and/or magnetic field induced adiabatic temperature decrease in the vicinity of the reverse magnetostructural transformation and a significant value of the conventional magnetocaloric effect at the Curie temperature are obtained. The Debye temperature and electronic coefficient equal to ?D=310±2 K and ?= 16.6±0.3 mJ/K2mol, respectively, do not depend on the magnetic field.

 Autoría: Chernenko V.A., Barandiarán J.M., Rodriguez Fernández J., Rojas D.P., Gutiérrez J., Lázpita P., Orue I.,

 Fuente: Journal of Magnetism and Magnetic Materials, 2012, 324(21), 3519-3523

 Editorial: Elsevier

 Fecha de publicación: 01/10/2012

 Nº de páginas: 5

 Tipo de publicación: Artículo de Revista

 DOI: 10.1016/j.jmmm.2012.02.080

 ISSN: 0304-8853,1873-4766

 Proyecto español: MAT200806542-C04-02

 Url de la publicación: https://doi.org/10.1016/j.jmmm.2012.02.080

Autoría

CHERNENKO, VOLODYMYR A.

BARANDIARÁN, JOSÉ M.

GUTIÉRREZ, JON

LÁZPITA, PATRICIA

ORUE, IÑAKI