Additional Pinning Effect by Heavy-Ion Irradiation in Coated Conductors with Artificial Pinning Centers

IF 1.7 3区物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Applied Superconductivity Pub Date : 2025-01-10 DOI:10.1109/TASC.2025.3527941

Tetsuro Sueyoshi;Toshinori Ozaki;Satoshi Semboshi;Hitoshi Sakane;Terukazu Nishizaki;Norito Ishikawa

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Abstract

We investigated additional pinning effect on in-field J_c properties of coated conductors including Y₂O₃ nano-particles as artificial pinning centers (APCs), where three types of heavy-ion beams were employed with the fluence of 4.84 × 10¹⁰ to 7.26 × 10¹¹ ions/cm². The addition of the irradiation defects enhanced the in-field J_c. Furthermore, more upward shift in the J_c was observed for the introduction of the defects with larger volume of the irradiation damage, not only in high magnetic fields but also in low magnetic fields. One factor of the irradiation effect is that the self-field J_c and the critical temperature T_c are relatively insensitive to the addition of the irradiation defects for the samples with APCs. Another is the glassy flux creep behavior over wide temperature region, suggesting that flux pinning by the combination of APCs and irradiation defects is strong against thermal fluctuation.

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我们以 4.84 × 1010 至 7.26 × 1011 离子/cm2 的通量使用三种重离子束，研究了将 Y2O3 纳米粒子作为人工针刺中心 (APC) 的涂层导体对场中 Jc 特性的额外针刺效应。辐照缺陷的增加增强了场内 Jc。此外，在引入辐照损伤体积较大的缺陷时，不仅在高磁场中，而且在低磁场中都观察到了更多的 Jc 上移。辐照效应的一个因素是，对于带有 APC 的样品，自场 Jc 和临界温度 Tc 对辐照缺陷的增加相对不敏感。另一个因素是在较宽的温度区域内，磁通蠕变行为呈玻璃状，这表明由 APCs 和辐照缺陷组合而成的磁通钉具有很强的抗热波动能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Applied Superconductivity 工程技术-工程：电子与电气

CiteScore

3.50

自引率

33.30%

发文量

650

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.