Microwave properties of superconducting MgB2
- 25 June 2001
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 78 (26) , 4160-4162
- https://doi.org/10.1063/1.1379366
Abstract
Measurements of the $10GHz$ microwave surface resistance of dense $MgB_{2}$ wire and pellet are reported. Significant improvements are observed in the wire with reduction of porosity. The data lie substantially above the theoretical estimates for a pure BCS s-wave superconductor . However the $R_{s}(20K)$ of the wire is an order of magnitude lower than that of polycrystal $YBa_{2}Cu_{3}O_{6.95}$ and matches with single crystal $YBa_{2}Cu_{3}O_{6.95}.$The results show promise for the use of $MgB_{2}$ in microwave applications.Comment: 3 pages, 3 figure
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