Formation of Plasmons in Secondary-Electron Emission Spectra at a Low-Energy Electron Radiation of a Surface of a Pt$_{80}$Co$_{20}$(111) Alloy

M. O. Vasylyev, V. O. Tin’kov, S. V. Chervonny

G.V. Kurdyumov Institute for Metal Physics, NAS of Ukraine, 36 Academician Vernadsky Blvd., UA-03142 Kyiv, Ukraine

Received: 02.12.2005. Download: PDF

A method of the electron energy loss spectroscopy is used to investigate a manifestation of the plasmons in the secondary electron emission spectra for the ordering Pt$_{80}$Co$_{20}$(111)Pt$_{80}$Co$_{20}$(111) alloy. The method is offered for determination of a ‘surface—bulk’ boundary based on the dependences of line intensities of the surface and bulk plasmons on the primary-electron energies within the range of 150—700 eV. As revealed, the thickness of nanosize surface layer for the disordered Pt$_{80}$Co$_{20}$(111) alloy is twice as much than thickness for the ordered state. Under ordering of an alloy at issue, the greater quantity of conduction electrons takes part in plasma oscillations.

Keywords: Pt$_{80}$Co$_{20}$ alloy, ordering, surface plasmons, bulk plasmons, chracteristic electron energy losses.

PACS: 71.45.Gm, 72.30.+q, 73.20.Mf, 73.50.Mx, 79.20.Hx, 79.20.Uv, 82.80.Pv

DOI: https://doi.org/10.15407/ufm.07.01.041

Citation: M. O. Vasylyev, V. O. Tin’kov, and S. V. Chervonny, Formation of Plasmons in Secondary-Electron Emission Spectra at a Low-Energy Electron Radiation of a Surface of a Pt$_{80}$Co$_{20}$(111) Alloy, Usp. Fiz. Met., 7, No. 1: 41—52 (2006) (in Russian), doi: 10.15407/ufm.07.01.041


References (19)  
  1. M. O. Vasylyev and S. I. Sidorenko, Diffusion and Surface Segregation (Kyiv: Ministry Education of Ukraine: 1998).
  2. Y. Gauthier, Surf. Rev. and Lett., 3, No. 5&6: 1663 (1996). Crossref
  3. A. R. Shul'man, S. A. Fridrikhov, Vtorichno-emissionnye metody issledovaniya tverdogo tela (Moskva: Nauka: 1977).
  4. M. A. Vasil'ev, Struktura i dinamika poverkhnosti perekhodnykh metallov (Kiev: Naukova dumka: 1988).
  5. V. T. Cherepin, M. A. Vasil'ev, Metody i pribory dlya analiza poverkhnosti materialov: Spravochnik (Kiev: Naukova dumka: 1982).
  6. D. Payns, Elementarnye vozbuzhdeniya v tverdykh telakh. (Moskva: Mir: 1965).
  7. L. Feldman, D. Mayer, Osnovy analiza poverkhnosti i tonkikh plenok (Moskva: Mir: 1989).
  8. Y. Gauthier, R. Baudoing-Savois, and J. M. Bugnard, Surf. Sci., 276: 1 (1992). Crossref
  9. M. A. Vasylyev, V. A. Tinkov, A. G. Blaschuk, J. Luyten, and C. Creemers, Appl. Surf. Sci. (2006) (in press).
  10. A. P. Shpak, M. A. Vasil'ev, V. A. Tin'kov, Metallofiz. noveishie tekhnol., 26, No. 6: 765 (2004).
  11. M. A. Vasil'ev and S. D. Gorodetsky, Vacuum, 37, No. 10: 723 (1987).
  12. M. P. Seah and W. A. Dench, Surf. Interface Anal., 1, No. 1: 2 (1979).
  13. J. O. Porteus and W. N. Faith, Phys. Rev., 12: 2097 (1975). Crossref
  14. A. D. Boardman, B. V. Paranjape, and R. Teshima, Surf. Sci., 49: 275 (1975). Crossref
  15. B. Lang, Surf. Sci., 66: 527 (1977).
  16. W. S. M. Werner, Surf. Sci., 526: L159 (2003). Crossref
  17. E. F. Chaykovskiy, V. S. Red'kin, V. V. Zashkvara, V. T. Sotnikov., FTT, 15: 1947 (1973).
  18. D. E. Edward and F. M. Propst., J. Chem. Phys., 55: 5175 (1971). Crossref
  19. V. V. Korablev, FTT, 12: 1638 (1970).
Cited By (1)
  1. V. O. Tin’kov, Usp. Fiz. Met. 7, 117 (2006).