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Influence of oxygen pressure on critical current density and magnetic flux pinning structures in YBa 2 Cu 3 O 7− x fabricated by chemical solution deposition
- Source :
- Chinese Physics B. 20:027402
- Publication Year :
- 2011
- Publisher :
- IOP Publishing, 2011.
-
Abstract
- This paper studies the effect of oxygen partial pressure on the fabrication of YBa2Cu3O7?x films on (00l) LaAlO3 substrates by metalorganic deposition using trifluoroacetates (TFA-MOD). As the oxygen partial pressure increases to 1500 Pa, a great increase in the superconducting properties is observed at high magnetic fields parallel to the YBCO c axis. The cross-sectional transmission electron microscope images show that a high density of stacking faults in the size range of 10?15 nm may act as flux pinning centres to enhance the critical current density of the YBCO films
Details
- ISSN :
- 16741056
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- Chinese Physics B
- Accession number :
- edsair.doi...........f71b1bf94f3e1956e8587d553405208d