Effect of substitution of Bi, Ga, and Fe on the structure and superconducting transition of Y1Ba2Cu3O6.5+δ
J. Jung, J. P. Franck, W. A. Miner, M. A. -K. Mohamed
DOI 10.1103/PhysRevB.37.7510 · Physical Review B
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Abstract
High-temperature superconductivity was observed in the system (MxY1−x)Ba2Cu3O6.5+δ) where M = Ga, Bi, or Fe. Ga and Fe substituted for Y reduce the orthorhombic distortion in the YBa2Cu3O6.5+δ tetragonal lattice. The changes in transition temperature at zero resistance are not related to gradual changes in the orthorhombic distortion. High Tc superconductivity (TcR=0=86 K) can be maintained in an undistorted tetragonal lattice. Bi substituted for Y does not substantially change the lattice parameters of the YBa2Cu3O6.5−δ compound.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6.5+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91 | Pressure unresolved | zero_resistance |
| Fe0.1Y0.9Ba2Cu3O6.5+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 86 | Pressure unresolved | zero_resistance |
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