Oxidation of the (110) face of a molybdenum single crystal
The low-energy electron diffraction and contact potential methods were used in an investigation (in better than 10/sup -/10 Torr vacuum) of the oxidation of the (110) face of Mo as a result of isothermal absorption of oxygen in the range 25--1400/sup 0/C and heating of the resultant structures 100--1700/sup 0/C. A two-dimensional film of MoO with the (100) face parallel to the substrate plane formed as a result of adsorption at temperatures T/sub ad/=550--750/sup 0/C and 1000--1300/sup 0/C. At intermediate temperatures of 750--1000/sup 0/C both faceted and unfaceted MoO/sub 3/ films with the (111) face parallel to the substrate plane were obtained. Crystals of the faceted oxide film were triangular pyramids with the (111) face of MoO/sub 3/ as the base and with the (100) faces of MoO/sub 3/ as the side surfaces. A two-dimensional MoO/sub 2/ film with the (100) face parallel to the substrate plane was obtained at T/sub ad/=700/sup 0/C and also after heating, at T/sub h/=1120--1180/sup 0/C, of oxygen films formed adsorbed at T/sub ad/=325--1170/sup 0/C.
- OSTI ID:
- 7097349
- Journal Information:
- Sov. Phys. - Solid State (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Solid State (Engl. Transl.); (United States) Vol. 19:12; ISSN SPSSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104* -- Metals & Alloys-- Physical Properties
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
DIFFRACTION
ELECTRON DIFFRACTION
ELEMENTS
FILMS
HIGH TEMPERATURE
MEDIUM TEMPERATURE
METALS
MOLYBDENUM
MOLYBDENUM COMPOUNDS
MOLYBDENUM OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METALS
SCATTERING
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE
WORK FUNCTIONS