Influence of heat treatment on superconductivity of MgB2 bulk sintered in flowing welding grade ar atmosphere

Authors

Yun Zhang, University of WollongongFollow
Cheng Lu, University of WollongongFollow
Sihai Zhou, University of WollongongFollow
K. C. Chung, Korea Institute of Materials Science, South Korea
Y. K. Kim, Korea Institute of Materials Science, South Korea
S. X. Dou, University of WollongongFollow

RIS ID

31397

Publication Details

Zhang, Y., Lu, C., Zhou, S., Chung, K. C., Kim, Y. K. & Dou, S. Xue. (2009). Influence of heat treatment on superconductivity of MgB2 bulk sintered in flowing welding grade ar atmosphere. IEEE Transactions on Magnetics, 45 (6), 2626-2629.

Abstract

In this paper, MgB₂ samples were sintered in flowing welding grade Ar. The effect of the sintering time varying from 10 minutes to 3 hours on superconductivity of MgB₂ has been investigated. It has been found that both H_c2 and H_irr increase with the sintering time and they have linear relationships with microstrain. The sample sintered for 30 min exhibits the highest J_c at high fields. The reason can be attributed to the improved connectivity and the increased H_c2.

Grant Number

ARC/DP0770205

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0770205