X-ray photoelectron spectroscopy of nanopowders of ZrO₂-Y₂O₃-Cr₂O₃ compounds

• Published in: Functional Materials
• Date: 2007
• Main Authors: Korduban, A.M., Yashchishyn, I.A., Konstantinova, T.E., Danilenko, I.A., Volkova, G.K., Glazunova, V.A.
• Format: Article
• Language: English
• Published: НТК «Інститут монокристалів» НАН України 2007
• Subjects: Characterization and properties
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/136916
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: X-ray photoelectron spectroscopy of nanopowders of ZrO₂-Y₂O₃-Cr₂O₃ compounds / A.M. Korduban, I.A. Yashchishyn, T.E. Konstantinova, I.A. Danilenko, G.K. Volkova, V.A. Glazunova // Functional Materials. — 2007. — Т. 14, № 4. — С. 454-459. — Бібліогр.: 27 назв. — англ.

The X-ray photoelectron spectroscopy investigation of doped zirconium dioxide nanopowders of ZrO₂ + 3 mol.% Y₂O₃ + 0.5 % Cr₂03, ZrO₂ + 0.5% Cr₂O₃ and ZrO₂ + 3 mol.% Y₂O₃ compositions has been carried out in order to obtain information about surface states of the nanoparticles. Samples of all compositions are nonstoichiometric and include four states of zirconium atoms: Zr⁴⁺(O²⁻, Zr⁴⁺(OH), Zr³⁺, and Zr²⁺. Although initial states of samples doped with yttrium and chromium and with yttrium only differ slightly from one another, after calcination at 600 °C in air for 1 h, intensity of component corresponding to Zr-OH bond in case of Y-doping decreased by 58% and in case of Y and Cr doping by 27% only. This fact shows that doping with chromium oxide slows down depiction of OH groups and explains nanopowders crystallization process delay.