Improved press forging of Ba2YCu3Ox superconductor
- 23 May 1988
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 52 (21) , 1831-1833
- https://doi.org/10.1063/1.99729
Abstract
An improved press forging technique has yielded ceramic Ba2YCu3Ox with a very high degree of orientation and mechanical integrity. The as‐forged samples are dense and tetragonal, and have an oxygen content of ≊6.3. By a partial oxidation of the samples, a superconducting skin 20–100 μm thick is formed on the outer surface. Transport measurements on this skin show a Jc >3000 A/cm2 with an improved field dependence as compared with randomly oriented samples. The restriction of oxidation to the thin outer skin has reduced the microcracking which accompanies the oxidation of tetragonal Ba2YCu3Ox.Keywords
This publication has 7 references indexed in Scilit:
- Growth and Optical Properties of Li13Nd(GeO4)4 Single CrystalJapanese Journal of Applied Physics, 1988
- Persistent currents in ceramic and evaporated thin-film toroids of Ba2YCu3O7Applied Physics Letters, 1988
- Reproducible technique for fabrication of thin films of high transition temperature superconductorsApplied Physics Letters, 1987
- Characterization of Ba2YCu3Oxas a Function of Oxygen Partial Pressure Part I: Thermoanalytical MeasurementsAdvanced Ceramic Materials, 1987
- SINTER-FORGED YBa2Cu3O7-δAdvanced Ceramic Materials, 1987
- Thin superconducting oxide filmsPhysical Review B, 1987
- Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressurePhysical Review Letters, 1987