TY - JOUR
T1 - High Temperature Martensitic Transformation and Giant Magnetocaloric Effect in Ni40Co10Mn41Sn9 Melt-Spun Ribbons
AU - Chen, F.
AU - Sánchez Llamazares, J. L.
AU - Sánchez-Valdés, C. F.
AU - Müllner, P.
AU - Shi, Y. G.
AU - Tong, Y. X.
AU - Li, L.
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/5/5
Y1 - 2018/5/5
N2 - We report a large magnetic entropy change associated with a high-temperature martensitic transformation in Ni40Co10Mn41Sn9 (at. %) melt-spun ribbons. The ribbons underwent a first-order forward martensitic transition and a reverse structural transition from the paramagnetic six-layered modulated martensite to a ferromagnetic austenite in the temperature range of 395–380 K. For a magnetic field change of 5 T (2 T), extremely large magnetic entropy changes of 33.9 (25) J kg−1 K−1 and 53 (22) J kg−1 K−1 upon reverse and forward martensitic transformations occurred. These values are among the largest for Ni-Mn based Heusler alloys reported so far. As compared with the large values upon heating, hysteresis losses upon cooling were negligibly low (only 0.36 J kg−1). The present findings open up the possibility of elevated temperature magnetic cooling.
AB - We report a large magnetic entropy change associated with a high-temperature martensitic transformation in Ni40Co10Mn41Sn9 (at. %) melt-spun ribbons. The ribbons underwent a first-order forward martensitic transition and a reverse structural transition from the paramagnetic six-layered modulated martensite to a ferromagnetic austenite in the temperature range of 395–380 K. For a magnetic field change of 5 T (2 T), extremely large magnetic entropy changes of 33.9 (25) J kg−1 K−1 and 53 (22) J kg−1 K−1 upon reverse and forward martensitic transformations occurred. These values are among the largest for Ni-Mn based Heusler alloys reported so far. As compared with the large values upon heating, hysteresis losses upon cooling were negligibly low (only 0.36 J kg−1). The present findings open up the possibility of elevated temperature magnetic cooling.
KW - Ni-Co-Mn-Sn
KW - melt spinning
KW - giant magnetic entropy change
KW - high-temperature martensitic transformation
KW - magnetic hysteresis loss
UR - http://www.scopus.com/inward/record.url?scp=85042013696&partnerID=8YFLogxK
UR - https://scholarworks.boisestate.edu/mse_facpubs/331
U2 - 10.1016/j.jallcom.2018.02.091
DO - 10.1016/j.jallcom.2018.02.091
M3 - Article
SN - 0925-8388
VL - 744
SP - 493
EP - 501
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -