Effect of ion-irradiation and annealing on superconductive property of PLD prepared YBCO tapes

✍ Scribed by K. Nakashima; N. Chikumoto; A. Ibi; S. Miyata; Y. Yamada; T. Kubo; A. Suzuki; T. Terai

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 278 KB
• Volume: 463-465
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2007.04.263

✦ Synopsis

PLD (pulsed laser deposition) prepared YBCO tapes were irradiated by 450 MeV Xe 23+ or 500 MeV Au 31+ ions with irradiation fluence from 1.0 • 10 10 to 1.0 • 10 12 ions/cm 2 to investigate for the effective condition which enhances J c . As a result of ion-irradiation, we observed the enhancement of J c especially at high applied magnetic field in 77 K. It was also shown that T c decreased with irradiation fluence. These changes of superconductive properties were found to depend on the kind of the ion and the energy.

We also studied post-annealing effect on the irradiated tapes. After the ion-irradiation, the samples were annealed at the temperature of 473 K or 673 K in the oxygen atmosphere for 2 h and then quenched. From the post-annealing experiments, we concluded that the post-annealing was a good way to recover T c without decreasing J c .