Effects of Electron Irradiation on the Structural Change in Oriented (Bi0.75Pb0.25)2Sr2Ca2Cu3O10 Superconductors

Publisher Website
Google Scholar
Abstract
Oriented sintered (Bi0.75Pb0.25)2Sr2Ca2Cu3O10 pellets have been irradiated up to 2×1018/cm2 with 3 MeV electrons at 370 K. By X-ray line broadening analyses, the amount of disordered portion in the c-axis direction increased by about 20% on irradiation of 2×1018/cm2. The intensity of Ca LMM Auger electrons decreased with increasing irradiation. The transition temperature onset remained unchanged at 110.1 K by irradiation, while the transition temperature offset decreased from 101.2 K to 94.7 K at the maximum irradiation dose. The above observations have been explained by the formation of the disordered portion in the grain surface by electron irradiation, which results in the reduction of the superconducting grain connection.