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Optimization of the BaZrO3concentration in YBCO films prepared by pulsed laser deposition
Optimization of the BaZrO3concentration in YBCO films prepared by pulsed laser deposition
- Source :
- Superconductor Science and Technology. 19:767-771
- Publication Year :
- 2006
- Publisher :
- IOP Publishing, 2006.
-
Abstract
- YBCO films were prepared by pulsed laser deposition from nanocrystalline targets doped with different concentrations of BaZrO3 ranging from c = 0.9 to 9.0 wt%. The critical temperature of the films decreases almost linearly with increasing BaZrO3 content whereas the critical current density shows a maximum near 3.9 wt%. In comparison with undoped YBCO films the accommodation field B* is considerably enhanced and the critical current density is improved in high fields in the films doped with BaZrO3, e.g. for c = 3.9 wt% by factor of 4.5 in a field of 5 T at 5 K. In the doped films the BaZrO3 particles grow epiaxially with YBCO. Transmission electron microscopy results show that the density of the BaZrO3 particles increases with increasing doping but the particle size remains practically the same (5–10 nm).
- Subjects :
- Materials science
Doping
Metals and Alloys
Analytical chemistry
Condensed Matter Physics
Nanocrystalline material
Pulsed laser deposition
Surface coating
Transmission electron microscopy
Materials Chemistry
Ceramics and Composites
Particle size
Electrical and Electronic Engineering
Current density
Type-II superconductor
Subjects
Details
- ISSN :
- 13616668 and 09532048
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- Superconductor Science and Technology
- Accession number :
- edsair.doi...........85e59563e8562e07ed474a94a190f750
- Full Text :
- https://doi.org/10.1088/0953-2048/19/8/013