Radio-frequency losses of YBa2Cu3O7-δcomposite superconductors
- 1 June 1988
- journal article
- Published by IOP Publishing in Superconductor Science and Technology
- Vol. 1 (1) , 24-26
- https://doi.org/10.1088/0953-2048/1/1/006
Abstract
YBa2Cu3O7- delta multi-crystalline ceramics were shaped into one-turn coils. The RF performance of the coils was evaluated by measuring the Q-value at 77 K from 1.3 to 270 MHz and comparing it with that of a Cu coil of the same geometry. The coils were also tested as NMR detection coils. In a poorly magnetically shielded environment the multicrystalline YBa2Cu3O7- delta performed less well than Cu in the frequency range studied. Q was significantly lowered by applying a magnetic field. The temperature dependence of the Q-value also was measured at 100 MHz, from 77 K to well above the superconducting phase transition temperature.Keywords
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