Abstract
We present a very comfortable and highly reproducible way to fabricate polycrystalline MgB2 films by screen printing, by airbrush or by painting of boron layers on ceramic substrates followed by a reaction with Mg vapor. As substrates polycrystalline Al2O3, ZrO2 and monocrystalline Al2O3, ZrO2, SrTiO3, MgO and LaAlO3 were studied. Mechanical and electrolytic polishing led to smooth films with a thickness of ≤ 1 µm. The transition temperatures were about 33-35 K and the irreversibility fields up to 5 T at 20 K. Critical current densities of 8 x 108 A/m2 were measured at 20 K and 1 T. Since no texturing of the MgB2 crystallites was observed, the superconducting properties show isotropic behavior in external magnetic fields.
| Original language | English |
|---|---|
| Title of host publication | Applied Superconductivity, Proceedings of the 6th European Conference on Applied Superconductivity, Sorrento, Italy, 14 - 15 September 2003, Institute of Physics Conference Series Number 181 |
| Editors | A. Andreone, G. P. Pepe, R. Cristiano and G. Masullo |
| Publisher | Institute of Physics Publishing |
| Pages | 1289 - 1293 |
| Number of pages | 5 |
| Volume | 181 |
| ISBN (Print) | 0750309814 |
| Publication status | Published - 2004 |
Fields of science
- 104005 Electrochemistry
- 104006 Solid state chemistry
- 104014 Surface chemistry
- 104017 Physical chemistry
- 105113 Crystallography
- 105116 Mineralogy
- 503013 Subject didactics of natural sciences
- 204 Chemical Process Engineering
- 204001 Inorganic chemical technology
- 205016 Materials testing
- 210006 Nanotechnology
- 211104 Metallurgy