Presentation Information
[9p-PA2-40]Effects of He-Ion Irradiation on the Structural and Superconducting Properties of YBa2Cu3O7-ð Thin Films
〇(M2)Atsuya Fukui1, Yulin Yan1, Hiroyuki Okazaki2, Hiroshi Koshikawa2, Shunya Yamamoto2, Tetsuya Yamaki2, Shuichi Ogawa1, Toshinori Ozaki3, Kazumasa Iida1 (1.Nihon Univ., 2.QST., 3.Kwanseigakuin Univ.)
Keywords:
He ion irradiation,oxygen annealing
We investigated the effects of He-ion irradiation on the structural and superconducting properties of epitaxial YBa2Cu3O7-ð thin films for radiation-tolerant superconducting applications in compact fusion reactors. X-ray diffraction, Raman spectroscopy, and electrical transport measurements revealed c-axis expansion, local structural changes in the Cu–O chains, and a suppression of the superconducting transition temperature after irradiation. Post-irradiation oxygen annealing partially restored the superconducting properties, providing insight into the relationship between irradiation-induced defects, oxygen deficiency, and superconducting performance.