Characterization of the effect of ion irradiation on industrially produced GdBa2Cu3O7-δ superconducting tapes using a slow positron beam

被引：2
作者：
Yabuuchi, Atsushi [1 ]
Ozaki, Toshinori [2 ]
Sakane, Hitoshi [3 ]
Okazaki, Hiroyuki [4 ]
Koshikawa, Hiroshi [4 ]
Yamamoto, Shunya [4 ]
Yamaki, Tetsuya [4 ]
机构：
[1] Kyoto Univ, Inst Integrated Radiat & Nucl Sci, Kumatori, Osaka 5900494, Japan
[2] Kwansei Gakuin Univ, Dept Nanotechnol Sustainable Energy, Sanda, Hyogo 6691337, Japan
[3] SHI ATEX Co Ltd, Saijo, Ehime 7991393, Japan
[4] Natl Inst Quantum & Radiol Sci & Technol QST, Takasaki Adv Radiat Res Inst, Takasaki, Gumma 3701292, Japan
来源：
APPLIED PHYSICS EXPRESS | 2020年 / 13卷 / 12期
关键词：
positron annihilation spectroscopy; positron beam; vacancy-type defect; high-temperature superconductor; ion irradiation; pinning center; IDENTIFICATION; FILMS;
D O I：
10.35848/1882-0786/abcd72
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
To investigate the effect of irradiation-induced defects on the superconducting characteristics of industrially produced superconductor-GdBa2Cu3O7-delta (GdBCO)-coated conductors (CCs), we irradiated the GdBCO CCs with Au ions at 2 or 10 MeV and probed them using a slow positron beam. Vacancy clusters were detected in both unirradiated and irradiated GdBCO CCs. However, the effect of ion irradiation on the GdBCO CCs was characterized as a slight reduction in the positron annihilation rate with low-momentum electrons. We also found a correlation between the annihilation rate of low-momentum electrons and the superconducting transition temperature.
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页数：4
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