Effect of Oxygen Deficiency on the Compressibility of High-Tc Superconductor YBa2Cu3O7−δ
1991 年 60 巻 4 号 p. 1189-1192
詳細
1991 年 60 巻 4 号 p. 1189-1192
The effect of pressure on the lattice constant and crystal structure of YBa2Cu3O7−δ (YBCO) has been studied up to about 120 kbar at room temperature in the wide range of δ, 0<δ<1. It is found that the lattice compression of all samples is anisotropic, and the volume compressibility of superconducting YBCO increases with δ, having a peak near the orthorhombic-tetragonal phase boundary δ\simeq0.8.
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