Issues »  Volume 7, Issue 1

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

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Cited By (1)
  1. V. O. Tin’kov, Usp. Fiz. Met. 7, 117 (2006).

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