Magnetocaloric effect in preferentially textured Mn50Ni40In10 melt spun ribbons

Applied Physics Letters - Tập 94 Số 22 - 2009
B. Hernando1, J.L. Sánchez Llamazares1, V.M. Prida1, D. Baldomir2, David Serantes2, M. Ilyn3,4, J. González3,5,6
1Universidad de Oviedo 1 Departamento de Física, Facultad de Ciencias, , Calvo Sotelo s/n, 33007 Oviedo, Spain
2Universidad de Santiago de Compostela 2 Departamento de Física Aplicada, Facultad de Física, , Campus Sur s/n, 15782 Santiago de Compostela, Spain
3UPV 3 Departamento Física de Materiales, Facultad de Química, , 1072, 20080 San Sebastián, Spain
4University of the Basque Country
5Universidad de Oviedo
6Universidade de Santiago de compostela

Tóm tắt

Inverse and direct magnetocaloric properties were evaluated in preferentially textured Mn50Ni40In10 ribbons applying the magnetic field H∥ along the ribbon length and perpendicular H⊥ to the ribbon plane (ΔH=30 kOe). Maximum magnetic entropy change, hysteretic losses, and refrigerant capacity were not significantly affected by crystallographic texture. Refrigeration capacity around structural transition is strongly reduced by the large hysteretic losses associated to the metamagnetic field-induced reverse martensitic transformation and narrower working temperature range making the interval around the magnetic transition more efficient for a refrigerant cycle (RCstruct=71 J kg−1 versus RCstructeff≈60 J kg−1, and RCmagn=89–86 J kg−1, for H∥ and H⊥, respectively).

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Applied Physics Letters

Tập 94 Số 22

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