Microwave surface resistance of MgB2

A. A. Zhukov, A. Purnell, Y. Miyoshi, Y. Bugoslavsky, Z. Lockman, A. Berenov, H. Y. Zhai, H. M. Christen, M. P. Paranthaman, D. H. Lowndes, M. H. Jo, M. G. Blamire, Ling Hao, J. Gallop, J. L. MacManus-Driscoll, L. F. Cohen

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

The microwave power and frequency dependence of the surface resistance of MgB2 films and powder samples were studied. Sample quality is relatively easy to identify by the breakdown in the ω2 law for poor-quality samples at all temperatures. The performance of MgB2 at 10 GHz and 21 K was compared directly with that of high-quality YBCO films. The surface resistance of MgB2 was found to be approximately three times higher at low microwave power and showed an onset of nonlinearity at microwave surface fields ten times lower than the YBCO film. It is clear that MgB 2 films are not yet optimized for microwave applications.

Original languageEnglish
Pages (from-to)2347-2349
Number of pages3
JournalApplied Physics Letters
Volume80
Issue number13
DOIs
StatePublished - Apr 1 2002

Fingerprint

Dive into the research topics of 'Microwave surface resistance of MgB2'. Together they form a unique fingerprint.

Cite this