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Tailoring of magnetocaloric effect in Ni Ni 45.5Mn 43.0In 11.5 metamagnetic shape memory alloy Rosa, W. O. González-Legarreta, L. García Fernández, Javier Sánchez Fernández, Tatiana Vega, V. Escoda i Acero, Ma. Lluïsa Suñol Martínez, Joan Josep Santos, Jonnathan D. Alves, M.J.P. Sommer, R.L. Prida Pidal, Victor Manuel de la Hernando, Blanca Ministerio de Ciencia e Innovación (Espanya) Metalls de transició -- Aliatges Transition metals -- Alloys Aliatges Alloys Metalls de transició -- Aliatges Transition metals -- Alloys We investigate the direct and inverse magnetocaloric effect in Ni 45.5Mn 43.0In 11.5 Heusler alloy ribbons comparing the results obtained for the as-quenched sample with the ones after different annealing procedures. An enhancement and shift of the entropy maximum to near room temperature is observed in all annealed samples. A remarkable magnetocaloric effect is observed in samples with short-time treatment (10 minutes) and at the lowest annealing temperature. We show that the suppressing of uncompensated martensitic transition and thermal hysteresis are both influenced by the heat treatment. Also, an improvement on Curie's temperature is observed and, at low magnetic field, it has been risen up to 310K. Our results demonstrate that the martensitic transformation is highly sensitive to the applied magnetic field and also to the annealing treatment, which means that the magnetocaloric effect can be tuned showing different behaviors for each sample Authors are thankful to Spanish MICINN for financial support: MAT2009-13108-C02-01-02 and MAT2010-20798-C05-04 2012-03-21 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/10256/13421 http://hdl.handle.net/10256/13421 eng info:eu-repo/semantics/altIdentifier/doi/10.1155/2012/794171 info:eu-repo/semantics/altIdentifier/issn/2090-2220 info:eu-repo/semantics/altIdentifier/eissn/2090-2239 info:eu-repo/grantAgreement/MICINN//MAT2009-13108-C02-02/ES/Propiedades Funcionales De Microsistemas Basados En Aleaciones Magneticas Amorfas Y Cristalinas Obtenidos Mediante Enfriamiento Ultrarrapido/ Attribution 3.0 Spain http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess application/pdf Hindawi Publishing Corporation Physics Research International, 2012, article ID 794171 Articles publicats (D-F)