The Pb–Pb and O–Pb Nuclear Spin Coupling in Ba(Pb,Bi)O3 Oxides.

We report the ¹⁷O, ²⁰⁷Pb NMR and ¹⁷O–²⁰⁷Pb SEDOR study of superconducting BaPb_{1- x} Bi _x O₃ ( x 0.35) oxides. Inhomogeneous The results points to the formation of microscopically inhomogeneous distribution of the carrier density in metallic phase. The local spin susceptibility is increased around Bi cation within an area, which is delimited by its two first cation shells. [ABSTRACT FROM AUTHOR]