Near-field microwave magnetic nanoscopy of superconducting radio frequency cavity materials
Permanent link to this recordhttp://hdl.handle.net/20.500.12613/5876
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AbstractA localized measurement of the RF critical field on superconducting radio frequency (SRF) cavity materials is a key step to identify specific defects that produce quenches of SRF cavities. Two measurements are performed to demonstrate these capabilities with a near-field scanning probe microwave microscope. The first is a third harmonic nonlinear measurement on a high Residual-Resistance- Ratio bulk Nb sample showing strong localized nonlinear response, with surface RF magnetic field Bsurface∼ 102 mT. The second is a raster scanned harmonic response image on a MgB2 thin film demonstrating a uniform nonlinear response over large areas. © 2014 AIP Publishing LLC.
Citation to related workAIP Publishing
Has partApplied Physics Letters
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