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Surface Structure of Wustite observed using Scanning Tunneling Microscopy
Author(s) -
Watanabe T.,
Kitamura K.,
Yamashita T.,
Nagata K.
Publication year - 2010
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201000152
Subject(s) - wüstite , scanning tunneling microscope , materials science , lattice constant , crystallite , stoichiometry , oxygen , lattice (music) , crystallography , analytical chemistry (journal) , mineralogy , metallurgy , chemistry , diffraction , nanotechnology , oxide , optics , physics , organic chemistry , chromatography , acoustics
The surface structure of polycrystalline wustite was observed by means of scanning tunnel microscopy (STM). Wustite (Fe 1‐ x O) samples were prepared from oxidation of iron plates under different oxygen partial pressures. The non‐stoichiometry numbers (1‐ x ) of Fe 1‐ x O were 0.912, 0.901 and 0.887, respectively. Fe 1‐ x O surface is composed of many terraces like stairs. The planes are covered with mesh. The mesh size is about 1.3 nm, corresponding to the double lattice constant of Fe 1‐ x O, and independent of x . There are some depressions in the mesh randomly distributed and the mesh around the depressions is deformed.