DocumentCode
1123766
Title
Difference Between 
and 
Nano-Rods for C-Axis-Correlated Pi
Author
Namba, Masafumi ; Awaji, Satoshi ; Watanabe, Kazuo ; Ito, Shun ; Aoyagi, Eiji ; Kai, Hideki ; Yasunaga, Shuhei ; Mukaida, Masashi ; Kita, Ryusuke
Author_Institution
Inst. for Mater. Res., Tohoku Univ., Sendai, Japan
Volume
19
Issue
3
fYear
2009
fDate
6/1/2009 12:00:00 AM
Firstpage
3495
Lastpage
3498
Abstract
In order to understand the vortex pinning properties by the BaZrO3 (BZO) and BaSnO3 (BSO) nano-rods in Er123 films, the microstructure and the angular dependence of J c and resistivity were measured in detail for the BZO and the BSO added Er123 films with the similar matching field prepared by pulsed laser deposition. We found that the peak at B //c in the angular dependence of J c for the Er123 film with BSO nano-rods was higher in a wide magnetic field region up to the irreversible field than that for the Er123 film with BZO nano-rods, although the minimum values of the angular dependence of J c are similar each other. Hence, the BSO nano-rods work more effectively as the c -axis-correlated pinning center than the BZO nano-rods because of the different elementary pinning energy of nano-rods.
Keywords
barium compounds; critical current density (superconductivity); doping profiles; electrical resistivity; erbium compounds; flux pinning; high-temperature superconductors; nanostructured materials; pulsed laser deposition; superconducting thin films; Er123 films; ErBa2Cu3Oy:BaSnO3; ErBa2Cu3Oy:BaZrO3; c-axis-correlated vortex pinning property; critical current density; doped sample; electrical resistivity; elementary pinning energy; high-temperature superconductors; microstructure; nanorods; pulsed laser deposition; superconducting thin films; ${rm ErBa}_{2}{rm Cu}_{3}{rm O}_{rm y}$ ; ${rm BaSnO}_{3}$ ${rm BaZrO}_{3}$
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2009.2018858
Filename
5153199
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