Enhanced critical current density in melt textured YBCO via Au ion surface irradiation

被引：10
|
作者：
Mezzetti, E
Gerbaldo, R
Ghigo, G
Gozzelino, L
Minetti, B
Cherubini, R
机构：
[1] IST NAZL FIS NUCL, SEZ TORINO, I-10125 TURIN, ITALY
[2] POLITECN TORINO, INFM, TURIN, ITALY
[3] IST NAZL FIS NUCL, LAB NAZL LEGNARO, I-35020 LEGNARO, PADOVA, ITALY
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1997年 / 7卷 / 02期
关键词：
D O I：
10.1109/77.620980
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We irradiated both side of bulk melt textured YBCO with 235 MeV Au ions. The thickness of the specimens is significally larger than the penetration range of the ions so that two surface layers of columnar defects are created. Critical current density enhancements were obtained in temperature and field ranges that are useful for applications. The boundary between reversible and irreversible regime is shifted toward higher temperatures. At higher fields the increase of the relaxation rate with temperature is less steep after irradiation. The general trends are independent of the thickness of the samples, at least in the range from 5% to 13% of volume affected by irradiation.
引用
收藏
页码：1993 / 1996
页数：4
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