Polar Oxide Interface Stabilization by Formation of Metallic Nanocrystals

Journal Article · Fri Jun 13 00:00:00 EDT 2003 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.90.216108· OSTI ID:15004210

Lazarov, Vlado; Chambers, Scott A; Gajdardziska-Josifovska, Marija

In-situ X ray photo-electron spectroscopy and ex-situ transmission electron microscopy and diffraction studies of a model Fe3O4(111)/MgO(111) polar oxide interface exclude stabilization by interface faceting, and uncover stabilization by dominant formation of metallic Fe(110) nanocrystals. The iron nanocrystals nucleate both at the interface and with in the magnetite film and grow in a Nishiyama-Wasserman orientation relationship with a bimodal size distribution related to twinning. Minority magnetite nanocrystals were also observed, growing in the less polar (100) orientation than the magnetite (111) film.

• Research Organization: Pacific Northwest National Lab., Richland, WA (US), Environmental Molecular Sciences Laboratory (US)
• Sponsoring Organization: US Department of Energy (US)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 15004210
• Report Number(s): PNNL-SA-37674; PRLTAO; 2640; KP1301030; TRN: US200412%%360
• Journal Information: Physical Review Letters, Vol. 90, Issue 21; Other Information: PBD: 13 Jun 2003; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
X-RAY DIFFRACTION
MAGNETITE
IRON OXIDES
X-RAY PHOTOELECTRON SPECTROSCOPY
STABILIZATION
TRANSMISSION ELECTRON MICROSCOPY
TWINNING
MAGNESIUM OXIDES
INTERFACES
IRON
MONOCRYSTALS
ENVIRONMENTAL MOLECULAR SCIENCES LABORATORY
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