IMPROVED SUPERCONDUCTING CRITICAL-CURRENT DENSITY IN MODIFIED JELLY ROLL NB3SN BY THE APPLICATION OF NIOBIUM (NB) DIFFUSION-BARRIERS

被引：12

作者：

MCKINNELL, JC ^{[1
]}

SMATHERS, DB ^{[1
]}

SIDDALL, MB ^{[1
]}

OLAREY, PM ^{[1
]}

机构：

[1] NATL HIGH MAGNET FIELD LAB,TALLAHASSEE,FL

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1995年 / 5卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1109/77.402921

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：

One of the limiting factors of high field magnets is the overall current density available in the high field region. We report a 40% increase in the critical current density of the non-Cu of Modified Jelly Roll (MJR) Nb3Sn wires. The increase occurs when niobium diffusion barriers are substituted for the standard vanadium diffusion barriers. The Nb3Sn J(c) is also shown to increase when vanadium is removed from the wire. The effective filament diameter of the wire increases only slightly and depends linearly on the MJR diameter. Niobium diffusion barriers are found to improve the RRR of the wire relative to vanadium diffusion barriers.

引用

页码：1768 / 1772

页数：5

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