The new resistance jump: the detection of damage in Nb barrier in MgB2 wires

Authors

Daniel Gajda, International Laboratory of HMF And LT
Andrzej Morawski, Institute of High Pressure Physics PAS
Andrzej Janusz Zaleski, Institute of Low Temperature and Structure Research PAS
Matthew A. Rindfleisch, Nuclear Hyper Tech Research, Inc
Chee Thong, Hyper Tech Research
Michael Tomsic, Hypertech Research
Md Shahriar Hossain, University of WollongongFollow
Tomasz Cetner, Institute of High Pressure Physics PAS

RIS ID

102289

Publication Details

Gajda, D., Morawski, A., Zaleski, A. J., Rindfleisch, M. A., Thong, C., Tomsic, M., Hossain, M. & Cetner, T. (2015). The new resistance jump: the detection of damage in Nb barrier in MgB₂ wires. Materials Letters, 160 81-84.

Abstract

We present a new method for detecting damage to Nb barriers in MgB₂ wires by using a four-contact probe. The transport measurements and scanning electron microscope images indicate that a newly identified jump in resistance means that there is damage to the Nb barrier. Damage detection is important for application because it allows us to avoid reactions between the filament and the sheath material, and to develop implementation methods for MgB₂ with high critical current density. Our methods for damage detection proposed in this paper are simple, fast, and easy to use.

Grant Number

ARC/DE130101247

Additional Grant Number

http://purl.org/au-research/grants/arc/DE130101247