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

J. S. Tsay; C. S. Shern

doi:10.1016/S0039-6028(97)00686-9

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

J. S. Tsay, C. S. Shern^*

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Article › peer-review

36 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 language	English
Pages (from-to)	313-318
Number of pages	6
Journal	Surface Science
Volume	396
Issue number	1-3
DOIs	https://doi.org/10.1016/S0039-6028(97)00686-9
Publication status	Published - 1998 Jan

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

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10.1016/S0039-6028(97)00686-9

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title = "Structure evolution for annealing Co ultrathin films on Pt (111)",

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.",

keywords = "Annealing, Auger electron spectroscopy, Cobalt, Low-energy electron diffraction, Metal-metal nonmagnetic heterostructure, Platinum, Surface structure, Ultraviolet photoelectron spectroscopy",

author = "Tsay, {J. S.} and Shern, {C. S.}",

note = "Funding Information: This work was supported by the National Science Council of China under Grant No. NSC 86-2112-M-003-002.",

year = "1998",

month = jan,

doi = "10.1016/S0039-6028(97)00686-9",

language = "English",

volume = "396",

pages = "313--318",

journal = "Surface Science",

issn = "0039-6028",

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number = "1-3",

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T1 - Structure evolution for annealing Co ultrathin films on Pt (111)

AU - Tsay, J. S.

AU - Shern, C. S.

N1 - Funding Information: This work was supported by the National Science Council of China under Grant No. NSC 86-2112-M-003-002.

PY - 1998/1

Y1 - 1998/1

N2 - 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.

AB - 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.

KW - Annealing

KW - Auger electron spectroscopy

KW - Cobalt

KW - Low-energy electron diffraction

KW - Metal-metal nonmagnetic heterostructure

KW - Platinum

KW - Surface structure

KW - Ultraviolet photoelectron spectroscopy

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U2 - 10.1016/S0039-6028(97)00686-9

DO - 10.1016/S0039-6028(97)00686-9

M3 - Article

AN - SCOPUS:0031677145

SN - 0039-6028

VL - 396

SP - 313

EP - 318

JO - Surface Science

JF - Surface Science

IS - 1-3

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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