The segregation of Sn in Cu and the formation of a Sn-Cu surface alloy has been studied by Auger electron spectroscopy (AES), reflection high-energy electron diffraction (RHEED) and scanning tunneling microscopy (STM). By annealing Cu(Sn) samples at T=500°C, we have found a Sn0.33Cu0.66 p(√3 × √3)R30° reconstructed surface layer. By increasing T to 750°C, the tin concentration decreases up to 0.20, while the reconstruction is maintained. Atomic-resolution STM images of this phase show no rippling, but several steps. The surface lattice parameters are 0.47±0.02 and 0.51±0.02 nm, respectively, along and across the steps. © 1998 Elsevier Science B.V. All rights reserved.

Contini, G., Di Castro, V., Motta, N., Sgarlata, A. (1998). Formation of a two-dimensional alloy/surface phase: Auger and STM study of Cu(Sn)(111). SURFACE SCIENCE, 405(2009/03/02 00:00:00.000).

Formation of a two-dimensional alloy/surface phase: Auger and STM study of Cu(Sn)(111)

SGARLATA, ANNA
1998-01-01

Abstract

The segregation of Sn in Cu and the formation of a Sn-Cu surface alloy has been studied by Auger electron spectroscopy (AES), reflection high-energy electron diffraction (RHEED) and scanning tunneling microscopy (STM). By annealing Cu(Sn) samples at T=500°C, we have found a Sn0.33Cu0.66 p(√3 × √3)R30° reconstructed surface layer. By increasing T to 750°C, the tin concentration decreases up to 0.20, while the reconstruction is maintained. Atomic-resolution STM images of this phase show no rippling, but several steps. The surface lattice parameters are 0.47±0.02 and 0.51±0.02 nm, respectively, along and across the steps. © 1998 Elsevier Science B.V. All rights reserved.
1998
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/03 - FISICA DELLA MATERIA
English
Alloys; Auger electron spectroscopy; Copper; Reflection high-energy electron diffraction (RHEED); Scanning tunneling microscopy (STM); Single crystal surfaces; Surface segregation; Tin
Annealing; Auger electron spectroscopy; Copper; Lattice constants; Reflection high energy electron diffraction; Scanning tunneling microscopy; Segregation (metallography); Single crystals; Surface structure; Surface treatment; Tin; Tin alloys; Rippling; Single crystal surface; Surface segregation; Surface phenomena
Contini, G., Di Castro, V., Motta, N., Sgarlata, A. (1998). Formation of a two-dimensional alloy/surface phase: Auger and STM study of Cu(Sn)(111). SURFACE SCIENCE, 405(2009/03/02 00:00:00.000).
Contini, G; Di Castro, V; Motta, N; Sgarlata, A
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/57225
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 13
  • ???jsp.display-item.citation.isi??? 12
social impact