Superconductivity in Y0.1Gd0.9Ba2Cu3O8-δand HoBa2Cu3O8-δsystems

Abstract
The DC electrical resistance and magnetisation of the Y0.1Gd0.9Ba2Cu3O8- delta and HoBa2Cu3O8- delta systems, which show superconductivity with onset temperature at about 90 K, have been studied. The lower and the upper critical fields for the systems at 77 K have been determined from the magnetisation measurements and are reported.