The Library

Impact of ambient oxygen on the surface structure of α-Cr2O3(0001)

Tools

Bikondoa, Oier, Moritz, W., Torrelles, X., Kim, Hee-Joung, Thornton, G. and Lindsay, R. (Robert). (2010) Impact of ambient oxygen on the surface structure of α-Cr2O3(0001). Physical Review B (Condensed Matter and Materials Physics), Vol.81 (No.20). Article 5439. ISSN 1098-0121

PDF
WRAP_Bikondoa_050710-bikondoa2010_cr2o3_uhv_hp.pdf - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
Download (4Mb)

Official URL: http://dx.doi.org/10.1103/PhysRevB.81.205439

Abstract

Surface x-ray diffraction has been employed to quantitatively assess the surface structure of α-Cr2O3(0001) as a function of oxygen partial pressure at room temperature. In ultrahigh vacuum, the surface is found to exhibit a partially occupied double layer of chromium atoms. At an oxygen partial pressure of 1×10−2 mbar, the surface is determined to be terminated by chromyl species (CrO), clearly demonstrating that the presence of oxygen can significantly influence the structure of α-Cr2O3(0001).

Item Type:

Journal Article

Subjects:

Q Science > QC Physics

Divisions:

Faculty of Science > Physics

Library of Congress Subject Headings (LCSH):

X-rays -- Diffraction, Surfaces (Physics) -- Research, Oxide coating -- Research, Adsorption -- Research

Journal or Publication Title:

Physical Review B (Condensed Matter and Materials Physics)

Publisher:

American Physical Society

ISSN:

1098-0121

Official Date:

26 May 2010

Dates:

Date	Event
26 May 2010	Published

Volume:

Vol.81

Number:

No.20

Page Range:

Article 5439

Identification Number:

10.1103/PhysRevB.81.205439

Status:

Peer Reviewed

Access rights to Published version:

Open Access

Funder:

Engineering and Physical Sciences Research Council (EPSRC), Spain. Ministerio de Ciencia e Innovación (MICINN), European Union (EU)

Grant number:

CSD2007-00041 (MICINN), MAT2009-09308 (MICINN)

References:

1. J. Goniakowski, F. Finocchi, and C. Noguera, Rep. Prog. Phys. 71, 016501 (2008).
2. M. Cherian, M.S. Rao, W. Yang, J. Jehng, A. Hirt, and G. Deo, Appl. Catal. A 233, 21
(2002).
3. P. Marcus and V. Maurice, in Passivity of Metals and Alloys, edited by M. Schutze,
Corrosion and Environmental Degradation Vol. 1 (Wiley-VCH, Weinhein, 1999).
4. R. Feidenhans’l, Surf. Sci. Rep. 10, 105 (1989).
5. F. Rohr, M. Bäumer, H.-J. Freund, J.A. Mejias, V. Staemmler, S. Müller, L. Hammer, and
K. Heinz, Surf. Sci. 372, L291 (1997).
6. F. Rohr, M. Bäumer, H.-J. Freund, J.A. Mejias, V. Staemmler, S. Müller, L. Hammer, and
K. Heinz, Surf. Sci. 389, 391 (1997).
7. W.A.A. Priyantha and G.D. Waddill, Surf. Sci. 578, 149 (2005).
8. Th. Gloege, H.L. Meyerheim, W. Moritz, and D. Wolf, Surf. Sci. Lett. 441, L917 (1999).
9. M. Lübbe and W. Moritz, J. Phys. Condens. Matt. 21, 134010 (2009).
10. C. Rehbein, N.M. Harrison, and A. Wander, Phys. Rev. B 54, 14066 (1996).
11. J.A. Cline, A.A. Rigos, and T.A. Arias, J. Phys. Chem. B, 104, 6195 (2000).
12. X.-G. Wang and J.R. Smith, Phys. Rev. B 68, 201402(R) (2003).
13. A. Rohrbach, J. Hafner, and G. Kresse, Phys. Rev. B 70, 125426 (2004).
14. S.A. Petrosyan, A.A. Rigos, and T.A. Arias, J. Phys. Chem. B 109, 15436 (2005).
15. P. Bernard, K. Peters, J. Alvarez, and S. Ferrer, Rev. Sci. Instrum. 70,1478 (1999).
16. E. Vlieg, J. Appl. Crystallogr. 30, 532 (1997).
17. E. Vlieg, J. Appl. Crystallogr. 33, 401 (2000).
18. I.K. Robinson and D. J. Tweet, Rep. Prog. Phys. 55, 599 (1992).
19. B.L. Györffy and G.M. Stocks, in Electronics in Disordered Metals and Metallic
Surfaces, edited by P. Phariseau, B.L. Györffy, and L. Scheire (Plenum, New York,
1979).
20. B. Dillmann, F. Rohr, O. Seiferth, G. Klivenyi, M. Bender, K. Homann, I.N. Yakovkin,
D. Ehrlich, M. Bäumer, H. Kuhlenbeck, and H.-J. Freund, Faraday Discuss. 105, 295
(1996).
21. S.C. York, M.W. Abee, and D.F. Cox, Surf. Sci. 437, 386 (1999).
22. I. Batyrev, A. Alavi, and M.W. Finnis, Faraday Discuss. 114, 33 (1999).
23. P.W. Tasker, J. Phys. C: Solid State Phys. 12, 4977 (1979).
24. O. Dulub, U. Diebold, and G. Kresse, Phys. Rev. Lett. 90, 016102 (2003).
25. C. Lemire, S. Bertarione, A. Zecchina, D. Scarano, A. Chaka, S. Shaikhutdinov, and H.-J.
Freund, Phys. Rev. Lett. 94, 166101 (2005).
26. A. Barbier, A. Stierle, N. Kasper, M.-J. Guittet, and J. Jupille, Phys. Rev. B 75, 233406
(2007).
27. A.-C. Dupuis, M. Abu Haija, B. Richter, H. Kuhlenbeck, and H.-J. Freund, Surf. Sci. 539,
99 (2003).
28. C. Kolczewski, K. Hermann, S. Guimond, H. Kuhlenbeck, and H.-J. Freund, Surf. Sci.
601, 5394 (2007).
29. W. Bergermayer, H. Schweiger and E. Wimmer, Phys. Rev. B 69, 195409 (2004).