ErNi_(2)ribbons were produced by rapid solidification using the melt spinning technique.Their structural,magnetic and magnetocaloric properties in the as-solidified state were studied by X-ray diffraction,scanning ele...ErNi_(2)ribbons were produced by rapid solidification using the melt spinning technique.Their structural,magnetic and magnetocaloric properties in the as-solidified state were studied by X-ray diffraction,scanning electron microscopy,magnetization and specific heat measurements.Samples are single phase with the MgCu2-type crystal structure,a Curie temperature TC of 6.8 K and a saturation magnetization at2 K and 5 T of 124.0 A·m^(2)/kg.For a magnetic field changeμ0△H of 5 T(2 T)ribbons show a maximum magnetic entropy change|△SMpeak|of 24.1(16.9)J/(kg·K),and an adiabatic temperature change△Tadmax of8.1(4.4)K;this is similar to the previously reported literature for bulk alloys that were processed through conventional melting techniques followed by prolonged thermal annealing.In addition,the samples also show slightly wider△SM(T)curves with respect to bulk alloys leading to a larger refrigerant capacity.展开更多
基金the SEP-CONACYT,Mexico(A1-S-37066)the MINECO,Spain(MAT2014-56116-C4-R)Principado de Asturias,Spain(IDI/2018/000185)。
文摘ErNi_(2)ribbons were produced by rapid solidification using the melt spinning technique.Their structural,magnetic and magnetocaloric properties in the as-solidified state were studied by X-ray diffraction,scanning electron microscopy,magnetization and specific heat measurements.Samples are single phase with the MgCu2-type crystal structure,a Curie temperature TC of 6.8 K and a saturation magnetization at2 K and 5 T of 124.0 A·m^(2)/kg.For a magnetic field changeμ0△H of 5 T(2 T)ribbons show a maximum magnetic entropy change|△SMpeak|of 24.1(16.9)J/(kg·K),and an adiabatic temperature change△Tadmax of8.1(4.4)K;this is similar to the previously reported literature for bulk alloys that were processed through conventional melting techniques followed by prolonged thermal annealing.In addition,the samples also show slightly wider△SM(T)curves with respect to bulk alloys leading to a larger refrigerant capacity.
