Influence of simultaneous substitution of Ca and Co in a YBa<SUB>2</SUB>Cu<SUB>3</SUB>O<SUB>7-δ</SUB> superconductor: neutron structural studies
- Ganguly, R.
- Rajagopal, H.
- Sequeira, A.
- Yakhmi, J. V.
- Dasannacharya, B. A.
DOIAbstract
Neutron structural study shows that partial substitution of Co for Cu in YBa2Cu3O7-δ leads to an uptake of excess oxygen in chain-layers, but causes some oxygen depletion in CuO2 planes. Coupled Co/Ca substitution arrests uptake of excess oxygen which could be the cause of partial restoration of Tc vis-a-vis the samples doped with Co only. A new feature of the doped samples is the presence of a small amount of oxygen at the (0,0,½) sites
Add to ORKG