High critical current density in iron-clad MgB2 tapes

被引：69

作者：

Fang, H ^{[1
]}

Padmanabhan, S

Zhou, YX

Salama, K

机构：

[1] Univ Houston, Texas Ctr Superconduct & Adv Mat, Houston, TX 77204 USA

[2] Univ Houston, Dept Mech Engn, Houston, TX 77204 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 23期

关键词：

D O I：

10.1063/1.1582358

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Iron-clad MgB2 superconducting tapes with a MgB2 core cross- section area of 1.07x10(-3) cm(2) were fabricated using the standard powder-in-tube method. The starting precursor was ultrafine Mg and B mixture powder prepared by high-energy ball milling. Very good grain connections as well as grain refinement were obtained in tapes annealed at 850 degreesC. Under a 1.5-T external magnetic field, J(c) is 1.07x10(5) and 6.54x10(3) A/cm(2) at 20 and 30 K, respectively. An extrapolation to zero field at 20 K gives a J(c) of 3.0x10(5) A/cm(2). (C) 2003 American Institute of Physics.

引用

页码：4113 / 4115

页数：3

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