HIGH-CURRENT PRESSURE CONTACTS TO AG PADS ON THIN-FILM SUPERCONDUCTORS

被引：2

作者：

GOODRICH, LF

SRIVASTAVA, AN

STAUFFER, TC

ROSHKO, A

机构：

[1] Electromagnetic Technology Division, National Institute of Standards and Technology, Boulder, CO 80303

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1994年 / 4卷 / 02期

关键词：

D O I：

10.1109/77.291692

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：

High current, low resistance, nonmagnetic, and nondestructive pressure contacts to Ag pads on YBa2Cu3O7-delta (YBCO) thin film superconductors were developed in this study. The contact resistance reported here includes the resistance of the current lead/Ag pad interface, the Ag pad/YBCO interface, and the bulk resistance of the contact material. This total contact resistance is the relevant parameter which determines power dissipation during critical-current measurements. It was found that regardless of the optimization of the Ag pad/YBCO interface through annealing, a pressure contact can yield a lower total resistance than a soldered contact. The lowest resistance obtained with pressure contacts was 3 mu Omega (for a 2 x 4 mm(2) contact). These contacts may be useful for many different high temperature superconductor (BTS) studies where high-current contacts with low heating are needed.

引用

页码：61 / 64

页数：4

共 4 条

[1] HIGH-TC SUPERCONDUCTOR NOBLE-METAL CONTACTS WITH SURFACE RESISTIVITIES IN THE 10-10 OMEGA-CM2 RANGE [J].