Preparation and characterization of superconducting MgB2films on alumina
| Autor: | Å. A. F. Olsen, M. Kühberger, Tom H. Johansen, Karl R Schöppl, Harald W. Weber, Gerhard Gritzner |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Superconductivity
Materials science Metals and Alloys Analytical chemistry chemistry.chemical_element Polishing Electrolyte Condensed Matter Physics Grinding chemistry Screen printing Materials Chemistry Ceramics and Composites Crystallite Electrical and Electronic Engineering Boron Ambient pressure |
| Zdroj: | Superconductor Science and Technology. 17:764-769 |
| ISSN: | 1361-6668 0953-2048 |
| DOI: | 10.1088/0953-2048/17/6/005 |
| Popis: | Polycrystalline MgB2 films with a thickness of about 1 µ mw ere prepared at ambient pressure. The boron layers were deposited onto single-crystalline and polycrystalline Al2O3 by screen printing, by airbrush techniques or by painting, followed by a reaction with Mg vapour. Grinding, mechanical and electrolytic polishing in non-aqueous dimethyl sulfoxide significantly improve dt he surface smoothness of the samples. The films had transition temperatures (Tc(0) )o f3 5K an di rreversibility fields of up to 15 T at 5K .T ransport critical current densities of 3 × 10 8 Am −2 were measured |
| Databáze: | OpenAIRE |
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