We studied the intragrain magnetic hysteresis of the superconductor (Hg1-xRex)Ba2Ca2Cu3O 8+δ (x=0.10, 0.18 and 0.25) close to Tc. From the magnetization curves we determined the temperature dependence of the irreversibility field (Hirr(T)), and the field dependence of the magnetization curve width (ΔM(H)). After irradiation to a fluence of 2 × 1021m-2 (E>0.1 MeV), the magnetization curves moderately increase their symmetry, and sizeable enhancements of Hirr(T) and ΔM(H) are observed. Although the substitution x=0.18 shows the best pinning properties before irradiation, x=0.10 matches - Or even surpasses - Them afterwards. This suggests that, within our temperature and field window, neutron irradiation plays a far more important role than Re-substitution in enhancing the irreversible behavior in the Hg-1223 system.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering