DocumentCode :
906888
Title :
Effect of 
on Flux Pinning Characteristics of Grain Aligned High- 
Author :
Ahmad, Dawood ; Park, Insuk ; Kim, G.C. ; Lee, J.H. ; Ko, Rock-Kil ; Kim, Y.C.
Author_Institution :
Dept. of Phys., Pusan Nat. Univ., Busan
Volume :
45
Issue :
6
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
2630
Lastpage :
2633
Abstract :
Flux pinning characteristics of grain aligned high- Tc superconductor Sm1-xEuxBa2Cu3O7-s (where x=0.0, 0.3, 0.5, 0.7, 0.9) were studied by magnetization data. Samples were prepared by solid state reaction and aligned under high magnetic field of 6 T. Results show that the transition temperature Tc and critical current density Jc was found to enhanced in optimal doped samples (x = 0.5-0.7). Peak positions of pinning force density Fp,max were shifted towards higher fields in optimal doped samples. Furthermore, the normalized pinning force density showed peaks at lower reduced fields. Results are interpreted on the basis of presence of ionic radius difference between Sm+3 and Eu+3 and secondary phases which act effectively at high temperature and low fields.
Keywords :
barium compounds; critical current density (superconductivity); europium compounds; flux pinning; high-temperature effects; high-temperature superconductors; magnetic transition temperature; magnetisation; materials preparation; samarium compounds; superconducting transition temperature; Sm1-xEuxBa2Cu3O7-delta; critical current density; flux pinning characteristics; grain aligned high-Tc superconductor; high temperature effect; ionic radius; magnetization data; material preparation; optimal doped sample; pinning force density; solid state reaction; transition temperature; Critical current density; flux pinning; ionic radius; rare earth superconductor;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2009.2018925
Filename :
4957809
Link To Document :
