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

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.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/03 - Fisica della Materia
eng
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.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/57225
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