An. Timoshevskii et al., THE ELECTRONIC-STRUCTURE AND SUPERCONDUCTING PROPERTIES OF Y1-XPRXBA2CU3O7-DELTA COMPOUND, Czechoslovak journal of Physics, 46, 1996, pp. 1451-1452
It is shown, on the basis of diamagnetic response measurements of Y1-x
PrxBa2Cu3O7-delta (Y(Pr)BCO) specimens, that the fraction of supercond
ucting phase is decreased sharply when increasing concentration of Pr
atoms. Electronic structure of these compounds have been investigated.
It is found that 4f(2) states of Pr atoms lie at the Fermi level when
substituting Y atoms, and change the hybridization relations between
the states of different atoms.