Crystal Structure and Tc of YBa2Cu3Oy (y>7)
- 1 August 1991
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 30 (8A) , L1378
- https://doi.org/10.1143/jjap.30.l1378
Abstract
At a high oxygen pressure of 6 GPa, YBa2Cu3O y was heat-treated. With an increasing supply of oxygen, the crystal structure of the processed specimens gradually changed from orthorhombic (y=7) to tetragonal (y=7.7), whereas the onset of superconducting transition temperature consistently remained at 92 K for all of the specimens. The distribution of charges among the copper-oxygen chains and the CuO2 sheets in YBa2Cu3O y (y>7) are discussed.Keywords
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