TY - JOUR
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 -