Effect of radiation damage on the coexistent antiferromagnetic superconductorSmRh4B4

Radiation-damaged films of the coexistent antiferromagnetic superconductor ${\mathrm{SmRh}}_4$ ${\mathrm{B}}_4$ have been studied. The upper critical field, superconducting and magnetic transition temperature, and resistivity ratio were determined as a function of dose. The anomalous dependence of the superconducting transition temperature on resistivity ratio found previously for "as-made" films was also found in the damaged films, indicating the anomaly is intrinsic to ${\mathrm{SmRh}}_4$ ${\mathrm{B}}_4$. A disorder-enhanced-spin-flip model is proposed to explain this effect.