Published October 1, 2009
| Version v1
Journal article
Nanoscale duplex oxide growth during early stages of oxidation of Cu-Ni(100)
Creators
- 1. Univ. of Illinois, Urbana, IL (United States)
- 2. State Univ. of New York, NY (United States)
- 3. Argonne National Laboratory (United States).Materials Science Division
Description
A combination of real-time in situ synchrotron x-ray diffraction and ex situ transmission electron microscopy is utilized to investigate the early stages of oxidation of Cu-Ni(100). Sequential formation of NiO and Cu2O oxides was observed by increasing oxygen partial pressure, and the Cu2O phase was identified to form preferentially on top of NiO nanoislands. The origin of this unexpected phenomenon is attributed to localized enrichment of Cu atoms accompanied with NiO growth, which thermodynamically drives the nanoscale Cu2O/NiO duplex oxide growth.
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 80
- Journal Issue
- 13
- Journal Page Range
- p. 134106
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 41071817
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ATOMS; ORIGIN; OXIDATION; OXIDES; OXYGEN; PARTIAL PRESSURE; SYNCHROTRONS; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION
- Descriptors DEC
- ACCELERATORS; CHALCOGENIDES; CHEMICAL REACTIONS; COHERENT SCATTERING; CYCLIC ACCELERATORS; DIFFRACTION; ELECTRON MICROSCOPY; ELEMENTS; MICROSCOPY; NONMETALS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; THERMODYNAMIC PROPERTIES
Optional Information
- Contract/Grant/Project number
- AC02-06CH11357
- Notes
- doi 10.1103/PhysRevB.80.134106
- Funding organization
- USDOE Office of Science (United States); National Science Foundation (United States)
- Secondary number(s)
- ANL/MSD/JA--65253