DocumentCode :
1124623
Title :
Vortex Behaviors Near Irreversibility Fields of 
-Axis Oriented Y123 Films Inserted Pr123 Layers
Author :
Takamura, Makoto ; Mukaida, Masashi ; Horii, Shigeru ; Ichinose, Ataru ; Kita, Ryusuke ; Namba, Masafumi ; Awaji, Satoshi ; Watanabe, Kazuo ; Matsumoto, Kaname ; Yoshida, Yutaka
Author_Institution :
Kyushu Univ., Fukuoka, Japan
Volume :
19
Issue :
3
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
3499
Lastpage :
3502
Abstract :
The irreversibility temperatures were measured for a-axis oriented and c-axis in-plane aligned Y123/Pr123 multilayer films in various magnetic fields. Pr123 layers act as two-dimensional (planer) c-axis correlated artificial pinning centers (APCs) in the multilayer films. In the irreversibility field-temperature (B irr - T) curves, the crossover was observed near matching field B phi for the multilayer films, when the magnetic fields were applied parallel to the c -axis of the film (B//c). It is suggested the vortex state in Y123 films with two-dimensional APCs is Bose glass below the crossover field. The B irr - T curves under B // a shifted toward lower temperature and magnetic field regions.
Keywords :
barium compounds; flux pinning; high-temperature superconductors; magnetic field effects; mixed state; multilayers; praseodymium compounds; superconducting thin films; yttrium compounds; Bose glass; YBa2Cu3O7-delta-PrBa2Cu3O7-delta; artificial pinning centers; irreversibility field -temperature; irreversibility temperatures; multilayer films; vortex behaviors; vortex state; High-temperature superconductors; multilayer films; superconducting films; vortex pinning;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2009.2019552
Filename :
5153274
Link To Document :
