High critical currents due to fission tracks in YBa2Cu3O7-δ

被引：3

作者：

Eisterer, M ^{[1
]}

Tönies, S

Weber, HW

Weinstein, R

Sawh, R

Ren, Y

机构：

[1] Osterreich Univ, Atominst, A-1020 Vienna, Austria

[2] Univ Houston, Inst Beam Particle Dynam, Houston, TX 77204 USA

来源：

PHYSICA C | 2000年 / 341卷

基金：

美国国家科学基金会;

关键词：

Critical current density (superconductivity) - Critical currents - Defects - Electric current measurement - Fission reactions - High temperature effects - Magnetic field effects - Neutron irradiation - Uranium;

D O I：

10.1016/S0921-4534(00)00979-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Fission tracks were introduced into uranium containing melt textured YBa2Cu3O7-delta by inducing fission of the uranium nuclei by thermal neutrons. We measured the critical current densities as a function of the fission track density. They are strongly enhanced at all temperatures (from 5 K up to 77 K) and magnetic fields (up to 14 T) due to the fission tracks. The enhancement is largest at low magnetic fields and at high temperatures (more than one order of magnitude). The total uranium content, the neutron spectrum and the amount of the fissionable isotope U-235 Were also varied, in order to optimize the defect structure for high critical currents.

引用

页码：1439 / 1440

页数：2

共 3 条

[1] RESPONSE OF PINNED FLUX VORTICES TO LOW-FREQUENCY FIELDS [J].