Structure evolution for annealing Co ultrathin films on Pt (111)

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Low-energy electron diffraction (LEED), Auger electron spectroscopy (AES) and ultraviolet photelectron spectroscopy (UPS) were used to study the thermal evolution of the structure of cobalt ultrathin films on a Pt(111) surface at different coverages. The phase diagram of surface structures was obtained from LEED observation. Several structural phases of this system were observed, i.e. pseudo-(1 × 1), incoherent epitaxy, extra p(2 × 2), rotational incoherent epitaxy, and alloying (1 × 1) structures. The coverage and temperature ranges were examined for each structure. Alloy formation was verified by AES. The changes in valence-band structures during phase transitions were studied by UPS.

Original languageEnglish
Pages (from-to)313-318
Number of pages6
JournalSurface Science
Volume396
Issue number1-3
DOIs
Publication statusPublished - 1998 Jan 1

Fingerprint

Low energy electron diffraction
Ultrathin films
ultraviolet spectroscopy
Auger electron spectroscopy
Ultraviolet spectroscopy
Epitaxial growth
epitaxy
Auger spectroscopy
electron spectroscopy
electron diffraction
Annealing
annealing
Valence bands
Cobalt
Alloying
Surface structure
Band structure
alloying
Phase diagrams
cobalt

Keywords

  • Annealing
  • Auger electron spectroscopy
  • Cobalt
  • Low-energy electron diffraction
  • Metal-metal nonmagnetic heterostructure
  • Platinum
  • Surface structure
  • Ultraviolet photoelectron spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Structure evolution for annealing Co ultrathin films on Pt (111). / Tsay, Jyh-Shen; Shern, Ching-Song.

In: Surface Science, Vol. 396, No. 1-3, 01.01.1998, p. 313-318.

Research output: Contribution to journalArticle

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