Effect of Mn on the superconductivity of YBa2Cu3O7−δ
R. F. Jardim, S. Gama, O. F. de Lima, I. Torriani
DOI 10.1103/PhysRevB.38.4580 · Physical Review B
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Abstract
We have prepared samples of YBa2(Cu1−xMnx)3O7−δ, with x=0.0, 0.01, 0.025, 0.05, 0.075, 0.10, 0.15, and 0.20. Superconductivity with Tc in the range 84–92 K is demonstrated by resistivity and magnetic susceptibility measurements. The substitution of Mn for Cu did not affect the onset temperature for the resistivity transition. X-ray diffraction analysis revealed the presence of additional phases, the amount increasing with Mn content, and also a slight modification of the YBa2Cu3O7−δ lattice parameters. A strong correlation between the width of the superconducting transition and the presence of additional phases was observed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2(Cu1-xMnx)3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | onset |
| YBa2(Cu1-xMnx)3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | onset |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | midpoint |
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