Thermal and X-Ray Analyses of High Temperature Superconductor YBa2Cu3O6.74
- 1 June 1987
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 26 (6A) , L1066
- https://doi.org/10.1143/jjap.26.l1066
Abstract
In situ observation of oxygen absorption and desorption during heating and cooling cycle with TG and DTA was done to determine the optimum preparation conditions of high T c Y-Ba-Cu-O compounds. We suggest the best recipe in air is to fire the raw mixture of 1/2Y2O3, 2BaCO3 and 3CuO at 930°C for more than 10 h, followed by slow cooling in the furnace to take as much oxygen as possible within the specimen. With this method single phase material of an orthorhombic superconducting oxide YBa2Cu3O6.74 with T c=91.3 K was synthesized, with orthorhombic unit cell dimensions of a=3.8180(6) Å, b=3.8888(7) Å, and c=11.668(2) Å.Keywords
This publication has 10 references indexed in Scilit:
- X-Ray and Electron Microscopic Study of a High Temperature Superconductor Y0.4Ba0.6CuO2.22Japanese Journal of Applied Physics, 1987
- Crystallochemical Studies on the High Temperature Superconductors La2-xMxCuO4-y (M=Ba and Sr)Japanese Journal of Applied Physics, 1987
- High Transition Temperature Superconductor: Y-Ba-Cu OxideJapanese Journal of Applied Physics, 1987
- High-Tc Superconductor Ba0.5Y0.5Cu1OxJapanese Journal of Applied Physics, 1987
- Superconductivity at 93 K in a new mixed-phase Y-Ba-Cu-O compound system at ambient pressurePhysical Review Letters, 1987
- New High Temperature Superconducting Oxides. (La1−xSrx)2CuO4−δ and (La1−xCax)2CuO4−δChemistry Letters, 1987
- Evidence for superconductivity above 40 K in the La-Ba-Cu-O compound systemPhysical Review Letters, 1987
- High TcSuperconductivity of La-Ba-Cu OxidesJapanese Journal of Applied Physics, 1987
- Possible highT c superconductivity in the Ba?La?Cu?O systemZeitschrift für Physik B Condensed Matter, 1986
- Les oxydes A2BaCuO5 (A = Y, Sm, Eu, Gd, Dy, Ho, Er, Yb)Journal of Solid State Chemistry, 1982