Skip to main content Accessibility help
×
Home

Structure Specificity of Nanocrystalline Praseodymia Doped Ceria

  • Vladislav A. Sadykov (a1), V.I. Voronin (a2), A. N. Petrov (a3), Yu. V. Frolova (a1), V.V. Kriventsov (a1), D.I. Kochubei (a1), V. I. Zaikovskii (a1), H. Borchert (a1) and S. Neophytides (a4)...

Abstract

The features of the structure of nanorystalline Ce1-xPrxO2-y system (0 ≤ × ≤ 0.5) prepared via a complex polymerized precursor (Pechini) route have been elucidated by using a combination of spectroscopic (XANES, XPS) and structural (TEM, neutron diffraction) methods. Within the studied range of composition, the structure of all samples air annealed at 500 °C corresponds to single-phase fluorite-like solid solution. The relative content of Pr3+ both in the bulk and in the surface layer appears to be as high as 20–50%. The Rietveld refinement revealed non-monotonous variation of structural parameters (lattice parameter, domain size, microstrain density, Ce-O and O-O distances) and residual lattice hydroxyls concentration with Pr content. Clustering of defects along with variation of the mean Pr cation radius/charge state and disordering of the surface layer/ domain boundaries appear to be responsible for the observed features.

Copyright

References

Hide All
1. Knauth, P., Tuller, H.L., Mat. Res. Soc. Symp. Proc. 548 (1999) 429
2. Bouchet, R., Knauth, P., Stefanik, T., Tuller, H.L., in Solid State Ionics 2002, Mat. Res. Soc. Symp. Proc. 756, 169 (2003).
3. Hwang, J.-H., and Mason, T.O., Z. Phys. Chem. 207, 21 (1998)
4. Kuznetsova, G., Sadykov, V. A., Moroz, E. M., Trukhan, S. N., Paukshtis, E. A., Kolomiichuk, V. N., Burgina, E. B., Zaikovskii, V. I., Fedotov, M. A., Lunin, V. V., Kemnitz, E., Stud. Surf. Sci. Catal. 143, 659 (2002).
5. Goshchitskii, B. N. and Menshikov, A. Z., Neutron News 7, 12 (1996)
6. Rietveld, H. M., J. Appl. Crystallogr. 2, 65 (1969)
7. Rodriges-Carvajal, J., Physica B 192, 155 (1993).
8. Sinev, M.Yu., Graham, G. W., Haack, L. P., Shelef, M., J. Mater. Res. 11, 1960 (1996)‥
9. Borchert, H., Frolova, Yu., Kaichev, V., Prosvirin, I., Alikina, G., Lukashevich, A., Zaikovskii, V., Moroz, E., Trukhan, S., Ivanov, V., Paukshtis, E., Bukhtiyarov, V., Sadykov, V., J. Phys. Chem. B (2005), in press.
10. Kaindl, G., Schmiester, G., Sampathkumaran, E.V., Phys. Rev. B 38, 10174 (1988)
11. Zhang, F., Wang, P., Koberstein, J., Khalid, S., Chan, S.-W., Surf. Sci. 563, 74 (2004).
12. Sekhar, B.R., Hervieu, M., and Studer, F., J. Phys. Condens. Matter 9, 2485 (1997).
13. Lytle, F.W., van der Laan, G., Greegor, R.B., Larson, E.M., Violet, C.E., and Wong, J., Phys. Rev. B, 41, 8955 (1990).
14. Nauer, M., Ftikos, Ch., Steele, B.C.H., J. Eur. Ceram. Soc. 14, 493 (1994).
15. Shuk, P., Greenblatt, M., Solid State Ionics 116, 217 (1999).
16. Sovestnov, A.E., Shaburov, V.A., Melekh, B.T., Smirnov, I.A., Smirnov, Yu. P., Egorov, A.V., Phys. Solid State 36, 620 (1994).
17. Perebeinos, V., Chan, S.-W., Zhang, F., Solid State Commun. 123, 295 (2002)
18. Hong, S.J., Virkar, A.V., J. Am. Ceram. Soc. 78, 433 (1995)
19. Yashima, M., Ishizawa, N., and Yoshimura, M., J. Am. Ceram. Soc. 75, 1541 (1992).
20.. Shannon, R.D., Acta Crystallogr. Sec. A 32, 751 (1976)

Structure Specificity of Nanocrystalline Praseodymia Doped Ceria

  • Vladislav A. Sadykov (a1), V.I. Voronin (a2), A. N. Petrov (a3), Yu. V. Frolova (a1), V.V. Kriventsov (a1), D.I. Kochubei (a1), V. I. Zaikovskii (a1), H. Borchert (a1) and S. Neophytides (a4)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed