Nekipelov S.V.1,2, Zhuk N.A.
2, Petrova O.V.
1, Sivkov V.N.
1
1Komi Science Centre of the Ural Division of the Russian Academy of Sciences, Syktyvkar, Russia
2Syktyvkar State University, Syktyvkar, Russia
Email: nekipelovsv@mail.ru, nzhuck@mail.ru
Thermally stable pyrochlores of bismuth tantalates doped with manganese and zinc atoms were obtained: Bi2ZnxMn1-xTa2O9.5-Δ (x=0.3, 0.7). According to XPS and NEXAFS spectroscopy, it was established that the ions in these solid solutions are in the charge states Bi (+3-δ), Zn (+2), Ta (+5-δ), and the manganese ions in the samples have predominantly an oxidation state 2+ and 3+, while the share of the lat-ter increases with increasing manganese content. Keywords: bismuth tantalates, pyrochlores, XPS, NEXAFS.
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