DocumentCode
1370287
Title
Evolution of Electromagnetic Properties and Microstructure With Sintering Temperature for 
Wires Made by Combined In-Situ/Ex-Situ Process
Author
Li, W.X. ; Zeng, R. ; Zhang, Y. ; Xu, X. ; Li, Yuhua ; Dou, S.X.
Author_Institution
Inst. for Supercond. & Electron. Mater., Univ. of Wollongong, Wollongong, NSW, Australia
Volume
21
Issue
3
fYear
2011
fDate
6/1/2011 12:00:00 AM
Firstpage
2635
Lastpage
2638
Abstract
The influences of microstructure, connectivity, and disorder on the critical current density, Jc, are discussed to clarify the different mechanisms of Jc(H) in different magnetic field ranges for in-situ and combined in-situ/ex-situ MgB2/Fe wires. Sintering temperature plays a very important role in the electromagnetic properties at different temperatures and under various magnetic fields. Connectivity, upper critical field, Hc2 , and irreversibility field, Hirr, are studied to demonstrate the mechanism of Jc dependence on magnetic field. The combined in-situ/ex-situ process is proved to be a promising technique for fabrication of practical MgB2 wires.
Keywords
critical current density (superconductivity); distortion; iron; magnesium compounds; sintering; superconducting critical field; superconducting materials; MgB2-Fe; combined in-situ/ex-situ process; connectivity; critical current density; disorder; electromagnetic properties; irreversibility field; microstructure; sintering temperature; superconducting wires; upper critical field; Crystals; Microstructure; Superconducting magnets; Temperature; Temperature dependence; Temperature measurement; Wires; ${rm MgB}_{2}$ ; Connectivity; critical current density; distortion;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2010.2084555
Filename
5621857
Link To Document