Effect of Oxygen Deficiency on the Crystal Structure and Superconducting Properties of the Ba2YCu3Oy
- 1 May 1987
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 26 (5A), L768
- https://doi.org/10.1143/jjap.26.l768
Abstract
Effect of oxygen deficiency on crystal structure and superconductivity of Ba2YCu3O7-δ was studied by annealing and quenching experiments. With increasing oxygen deficiency superconductivity was suppressed remarkably while axial ratio, a 0/b 0 in the orthorhombic phase approached to unity and c 0 value increased. Structural transformation from orthorhombic to tetragonal lattice took place in the temperature range, 950∼980°C and maximum oxygen deficiency, δ=0.7 was observed for the tetragonal phase.Keywords
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