Transport and structural properties of the Ho1Ba2Cu3O9−δ superconductor
- 27 July 1987
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 51 (4) , 282-284
- https://doi.org/10.1063/1.98473
Abstract
The compound Ho1Ba2Cu3O9−δ has been found to be a high Tc superconductor. The onset of the superconducting transition is 88 K with zero resistance achieved at 87 K. The x‐ray diffraction spectrum of this material shows it to be a single‐phase perovskite similar to the Y1Ba2Cu3O9−δ compound but different from the K2NiF4 perovskite which is believed to be the superconducting phase for the La2(1−x) Ba2xCuO4−δ system. Possible oxygen deficiencies in several of the unit cell planes are discussed. The room‐temperature resistance, the superconducting onset temperature, and the emergence of the single phase all depend upon the sample preparation firing conditions.Keywords
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