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Effects of Ion Irradiation on the Critical Current Density of Ba 2 YCu 3 O 7-δ Thin Films

1989; Institute of Physics; Volume: 28; Issue: 9A Linguagem: Inglês

10.1143/jjap.28.l1521

1347-4065

Tamaki Masegi, Takayuki Terai, Yoichi Takahashi, Youichi Enomoto, Shugo Kubo,

Superconducting Materials and Applications

Effects of ion irradiation on the critical current density of high- T c superconducting Ba 2 YCu 3 O 7-δ thin films have been studied. For the film subjected to a fluence of 5.02×10 11 ions/cm 2 of 514 keV O + , the critical current density determined from I - V characteristics was enhanced by about 10% from 53 to 75 K. The temperature dependence of the critical current density was not affected by ion irradiation. Irradiation effects on the critical temperature of these films have also been investigated.