State of bismuth in BaBiO3and BaBi1−xPbxO3: Bi 4fphotoemission and Bi L3absorption spectroscopic studies

Gangavarapu Ranga Rao; U. Kulkarni G.; Vijayakrishnan V.; N. R. Rao C.; Ram Seshadri

doi:10.1063/1.104145

Profiles Research Units Publications

Research Article

State of bismuth in BaBiO3and BaBi1−xPbxO3: Bi 4fphotoemission and Bi L3absorption spectroscopic studies

, U. Kulkarni G., Vijayakrishnan V., N. R. Rao C., Ram Seshadri

Published in AIP Publishing

1998

DOI: 10.1063/1.104145

Volume: 57

Issue: 17

Pages: 1823 - 1824

Abstract

The 2p 6d feature in the Bi L₃ spectra has different energies in the semiconducting (0.0≤x<0.7) and the superconducting (x=0.75) compositions of BaBi₁₋_xPb_xO₃. The Bi 4f core level spectrum shows distinct features ascribable to Bi III and Bi V in BaBiO₃ and in the semiconducting compositions; the width of the 4f peaks is also considerably larger in these compositions compared to that in BaBi_0.25Pb_0.75O₃, which shows a single sharp Bi 4f feature.