Magnetocaloric properties of Gd1−xBx(x=0, 0.06, 0.09, 0.12) alloys

Abstract The magnetization behavior has been analyzed for Gd 1− x B x ( x =0, 0.06, 0.09, 0.12) alloys which were prepared by conventional arc-melting method. The Curie temperature is very similar to B concentration. A large magnetic entropy change Δ S M , which is calculated from H vs. M curves associated with the ferromagnetic–paramagnetic transitions, has been observed. The maximum Δ S M for an applied field of 1.5 T is 4.36, 4.08, 4.00, and 3.98 J/kg K for x =0, 0.06, 0.09 and 0.12, respectively. Adiabatic temperature change Δ T ad is measured directly by a homemade cryostat. The maximum values for an applied field of 2 T are 4.26, 3.86, 3.81, 3.86 K for x =0, 0.06, 0.09 and 0.12, respectively.