Distribution of electron density in BaPb1−xBixO3 evidenced by 207Pb and 17O NMR

The inhomogeneous magnetic broadening of the 17O and 207Pb NMR spectra resulting from a distribution of the Knight shifts was studied in the metallic phase of BaPb1-xBixO3 oxides (0x0.33). It was shown that Bi atoms, which are randomly incorporated in the parent BaPbO3, give rise to an increased spi...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2004-08, Vol.408-410, p.824-825
Main Authors: Trokiner, Arlette, Piskunov, Yuri, Gerashenko, Alexander, Pogudin, Anton, Mikhalev, Konstantin, Yakubovsky, Andrey, Verkhovskii, Stanislav
Format: Article
Language:English
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Summary:The inhomogeneous magnetic broadening of the 17O and 207Pb NMR spectra resulting from a distribution of the Knight shifts was studied in the metallic phase of BaPb1-xBixO3 oxides (0x0.33). It was shown that Bi atoms, which are randomly incorporated in the parent BaPbO3, give rise to an increased spin density of carriers within the two first cation shells. The percolative overlap of these areas is expected for superconducting compositions (x > 0.1).
ISSN:0921-4534
DOI:10.1016/j.physc.2004.03.147