2026-04-17T01:03:17Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/134212024-06-18T11:49:47Zcom_2072_452955com_2072_2054col_2072_453063

00925njm 22002777a 4500 dc Rosa, W. O. author González-Legarreta, L. author García Fernández, Javier author Sánchez Fernández, Tatiana author Vega, V. author Escoda i Acero, Ma. Lluïsa author Suñol Martínez, Joan Josep author Santos, Jonnathan D. author Alves, M.J.P. author Sommer, R.L. author Prida Pidal, Victor Manuel de la author Hernando, Blanca author 2012-03-21 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 http://hdl.handle.net/10256/13421 Metalls de transició -- Aliatges Transition metals -- Alloys Aliatges Alloys Metalls de transició -- Aliatges Transition metals -- Alloys Tailoring of magnetocaloric effect in Ni Ni 45.5Mn 43.0In 11.5 metamagnetic shape memory alloy