Net-shape processing of single-domain YBa2Cu3Ox for a novel high-Q millimeter wave resonator

Large single domain YBa2Cu3Ox materials have been successfully fabricated w ith superb RF properties by employing the seeded-melt growth (SMG) method. Based on a new design, a cavity resonator has been constructed using the si ngle-domain YBa2Cu3Ox processed by SMG. The cavity consists of a hollow cyl indrical cup covered by a polished plate, which operates in the TM010 mode. All cavity parts are made of single-domain YBa2Cu3Ox without any dielectri c materials. The measured Q has reached a high value of 10200 at 18.4 GHz. Our experimental data show great promise in the development of RF component s using single domain high temperature superconductors. (C) 1999 Elsevier S cience B.V. All rights reserved.