High-magnetic field characterization of magnetocaloric effect in FeZrB(Cu) amorphous ribbons

作者：Alvarez Alonso P^*; Sanchez Llamazares J L; Sanchez Valdes C F; Fdez Gubieda M L; Gorria Pedro; Blanco J A

来源：Journal of Applied Physics, 2015, 117(17): 17A710.

DOI：10.1063/1.4907188

The magnetic and magnetocaloric properties of a series of Fe-rich FeZrB(Cu) amorphous ribbons were investigated under magnetic field values up to mu H-0 of 8 T. A correlation between the saturation magnetization and the maximum magnetic entropy change vertical bar Delta S-M(peak)vertical bar is clearly evidenced. Although these metallic glasses show relatively low vertical bar Delta S-M(peak)vertical bar values (from 3.6 to 4.4 J kg(-1) K-1 for mu(0)Delta H - 8 T), the Delta S-M(T) curve broadens upon the increase in mu(0)Delta H, giving rise to a large refrigerant capacity RC (above 900 J kg(-1) for mu(0)Delta H-8 T). Using the universal curve method for rescaling the Delta S-M(T, mu(0)Delta H) curves, we found a collapse of the curves around the Curie temperature. However, in the low-temperature range the curves do not match into a single one due to the existence of magnetic frustration.

• 出版日期2015-5-7