Incorporation of hyperfine probes into the thin-film superconductor YBa2Cu3O7−δ during deposition
- 6 December 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 63 (23) , 3224-3226
- https://doi.org/10.1063/1.110205
Abstract
Radioactive 111In has been incorporated into oriented thin films of YBa2Cu3O7−δ during a thermal coevaporation process. The hyperfine technique of perturbed γγ‐angular correlation spectroscopy shows that 60% of the indium substitutes at a single site in the superconductor. We obtain spectra with reasonable statistics from 2 mCi of starting material, about 1% of which is incorporated into the film. Other methods of incorporating indium into films and bulk YBa2Cu3O7−δ have often resulted in a significant amount of indium being incorporated into impurity phases.Keywords
This publication has 8 references indexed in Scilit:
- Oxygen-vacancy complexes in cerium oxide studied bytime-differential perturbed-angular-correlation spectroscopyPhysical Review B, 1993
- New technique to dope GaAs crystals with the 111In→111Cd probe for perturbed-angular-correlation spectroscopyApplied Physics Letters, 1992
- Electric quadrupole interaction measurements in YBa2Cu3O x and related compoundsHyperfine Interactions, 1992
- Measurements of the electric field gradient at cadmium in the high Tc superconductor YBa2Cu3O6+xHyperfine Interactions, 1990
- 111Cd hyperfine probes in YBaCuOHyperfine Interactions, 1990
- Isolated indium atoms on copper surfaces: A perturbed γ-γ angular correlation studySurface Science, 1989
- Measurements of the electric field gradient at Cd in the high Tc superconductor YBa2Cu3O7−xPhysics Letters A, 1988
- Low-temperature preparation of superconducting YBa2Cu3O7−δ films on Si, MgO, and SrTiO3 by thermal coevaporationApplied Physics Letters, 1988