DocumentCode :
907018
Title :
Influence of Heat Treatment on Superconductivity of MgB 
Bulk Sintered in Flowing Welding Grade Ar Atmosphere
Author :
Zhang, Y. ; Lu, C. ; Zhou, S.H. ; Chung, K.C. ; Kim, Y.K. ; Dou, S.X.
Author_Institution :
Inst. for Supercond. & Electron. Mater., Univ. of Wollongong, Wollongong, NSW
Volume :
45
Issue :
6
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
2626
Lastpage :
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 Hc2 and Hirr increase with the sintering time and they have linear relationships with microstrain. The sample sintered for 30 min exhibits the highest Jc at high fields. The reason can be attributed to the improved connectivity and the increased Hc2.
Keywords :
critical current density (superconductivity); heat treatment; magnesium compounds; powders; sintering; superconducting critical field; superconducting materials; critical current density; flowing welding grade Ar atmosphere; heat treatment; linear relationships; microstrain; powders; sintering; superconductivity; time 10 min to 3 hour; upper critical field; MgB $_2$ ; microstrain; sintering time; superconductivity;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2009.2018924
Filename :
4957820
Link To Document :
