Structure, adhesion, and stability of metal/oxide and oxide/oxide interfaces

Technical Report · Sun Nov 01 00:00:00 EST 1992

DOI:https://doi.org/10.2172/6895283· OSTI ID:6895283

Lad, R J

Studies of structural, electronic, and chemical properties of metal/oxide and oxide/oxide interfaces were performed on well-defined interfaces that created by depositing ultra-thin potassium and aluminum films and their oxides onto single crystal TiO[sub 2] and NiO surfaces. Work focused on determining the structure, growth mechanisms, and morphologies of metal and oxide films as they are deposited an single crystal oxide surfaces using RHEED and atomic force microscopy probing electronic structure, bonding and chemical interactions at the interfaces using x-ray and uv photoelectron spectroscopies (XPS, UPS) and Auger electron spectroscopy (AES), and understanding factors affecting stability and reactivity of the interface regions including the role of defects and impurities. Results indicate that kinetic effects have an important influence on interface structure and composition, and they also show that defects in the oxide substrate induce new electronic states at the interface which play a major role in cation-anion bonding and interface interactions. The results establish a link between electronic and chemical bonding properties and the interface structure and morphology, which is required to successfully manipulate the interfacial properties of advanced ceramic materials.

• Research Organization: Maine Univ., Orono, ME (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG02-90ER45417
• OSTI ID: 6895283
• Report Number(s): DOE/ER/45417-4; ON: DE93012930
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
INTERFACES
METALS
OXIDES
ALUMINIUM
DEPOSITION
IMPURITIES
NICKEL OXIDES
POTASSIUM
PROGRESS REPORT
TITANIUM OXIDES
ALKALI METALS
CHALCOGENIDES
DOCUMENT TYPES
ELEMENTS
NICKEL COMPOUNDS
OXYGEN COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies