Temperature rise and trapped field in a GdBaCuO bulk superconductor cooled down to 10 K after applying pulsed magnetic field

Abstract

In order to magnetize the bulk superconductors more strongly by pulsed-field magnetization (PFM), the temperature rise Δ T( t) and the trapped field B T of the GdBaCuO bulk cooled down to 10 K have been investigated after applying the five successive (No1–No5) pulsed-field ranging from 4.70 T to 6.04 T. Δ T increased linearly with lowering initial bulk temperature T s and with increasing strength of the applied field B ex. From the generated heat ( Q) estimation, the difference Q value, Δ Q = Q(No1) − Q(No5) which suggests that the Δ Q nearly stands for the flux pinning loss Q p shows the similar B ex dependence to the B T value.