SUPERCONDUCTING AND MICROWAVE PROPERTIES OF SPRAY PYROLIZED TL2BA2CA2CU3OX FILMS ON 1-INCH POLYCRYSTALLINE ZIRCONIA DISKS
The processing of spray pyrolyzed Tl2Ba2Ca2Cu3Ox films has been successfully scaled up to samples on 1 inch diameter, finely polished yttria-stabilized zirconia disks. Transport critical current density (JC) measurements on the films exhibited values of >3×104 A/cm2 at 77 K. The surface resis...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1995
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| Summary: | The processing of spray pyrolyzed Tl2Ba2Ca2Cu3Ox films has been successfully scaled up to samples on 1 inch diameter, finely polished yttria-stabilized zirconia disks. Transport critical current density (JC) measurements on the films exhibited values of >3×104 A/cm2 at 77 K. The surface resistance (RS) of such films has been measured using a TE011 mode end-wall-replacement cavity at 20 GHz and 77 K. RS values of 5.3 mΩ and 1.3 mΩ at 20 GHz and 10 GHz respectively were obtained. These results are the best recorded RS values to date for thick films of any superconductor at the same frequencies and at 77 K.© 1995 American Institute of Physics. |
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