Abstract
Abstract We have observed flux-flow resistivity in superconducting sintered polycrystalline Y123 over the temperature range of 5–89 K, using a contact-less microwave technique, in an applied magnetic field varying to a maximum of 1.9 T. Flux-flow is observed superimposed on an isotropic background resistivity, and is at maximum several degrees below the transmission temperature. Flux-flow resistivity, a consequence of the Lorentz force on a fluxoid, varies as sin 2 (φ), where φ is the angle between the applied magnetic field and the RF current.
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