DocumentCode :
1120850
Title :
Field Trapping Properties of 
-Growth Region in RE123 Melt-Solidified Bulks
Author :
Yamazaki, Yuhya ; Ishii, Y. ; Ogino, H. ; Horii, S. ; Shimoyama, J. ; Kishio, K.
Author_Institution :
Dept. of Appl. Chem., Univ. of Tokyo, Tokyo, Japan
Volume :
19
Issue :
3
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
2949
Lastpage :
2952
Abstract :
We have fabricated Ag-free and Ag-added Dy123 cylindrical melt-solidified bulks with large c -growth region. Samples cut from c-growth region of each bulk exhibited high J c up to high magnetic fields and excellent field trapping properties. On the contrary, J c and field trapping properties in the a -growth region were suppressed by subgrain boundaries. Magnetic flux penetration along the subgrain boundaries was confirmed in magneto-optical images of the a -growth region. Both J c and field trapping properties of Dy123 bulks were improved by Ag-addition due to low level Ag substitution for Cu site in the CuO chain.
Keywords :
barium compounds; critical current density (superconductivity); dysprosium compounds; grain boundaries; high-temperature superconductors; magnetic field effects; materials preparation; silver; DyBa2Cu3Oy; DyBa2Cu3Oy-Ag; RE123 melt-solidified bulks; critical current density; field trapping properties; high magnetic fields; magnetic flux penetration; magneto-optical images; subgrain boundaries; High-temperature superconductors; magnetic field measurement; superconducting materials growth; superconducting materials measurements;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2009.2018311
Filename :
5152920
Link To Document :
