Abstract
The wurtzite-type ZnO is a polar crystal, and its ideal (0001) surface is terminated by Zn ions while the (000 1 ) surface is terminated by oxygen ions. The surface structures of ZnO single crystals were evaluated by atomic force microscopy (AFM) and coaxial impact-collision ion scattering spectroscopy (CAICISS). The ZnO crystals were etched in HNOs and HC1 solutions, or annealed in Oi gas and vacuum at 800 °C and 950 °C to obtain flat surfaces in atomic scale. When etched in solutions and annealed in vacuum, the samples had rough O-terminated surfaces. The Znterminated and O-terminated surfaces had clear step/terrace structures only when treated in O2 gas at 950 °C for 3 hours. The CAICISS spectra were successfully analyzed on the basis of the step/terrace structure with the steps of half c-axis in height.
| Original language | English |
|---|---|
| Pages (from-to) | 109-112 |
| Number of pages | 4 |
| Journal | Key Engineering Materials |
| Volume | 169-170 |
| Publication status | Published - 1999 |
| Externally published | Yes |
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Keywords
- Atomic force microscopy
- Coaxial impact-collision ion scattering spectroscopy
- Polar crystal
- Surface structure
- Zinc oxide
ASJC Scopus subject areas
- Ceramics and Composites
- Chemical Engineering (miscellaneous)
Cite this
Surface structures of (0001)/(0001) of ZnO single crystals. / Maki, Hideyuki; Ichinose, N.; Sekiguchi, S.; Ohashi, N.; Haneda, H.; Tanaka, J.
In: Key Engineering Materials, Vol. 169-170, 1999, p. 109-112.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Surface structures of (0001)/(0001) of ZnO single crystals
AU - Maki, Hideyuki
AU - Ichinose, N.
AU - Sekiguchi, S.
AU - Ohashi, N.
AU - Haneda, H.
AU - Tanaka, J.
PY - 1999
Y1 - 1999
N2 - The wurtzite-type ZnO is a polar crystal, and its ideal (0001) surface is terminated by Zn ions while the (000 1 ) surface is terminated by oxygen ions. The surface structures of ZnO single crystals were evaluated by atomic force microscopy (AFM) and coaxial impact-collision ion scattering spectroscopy (CAICISS). The ZnO crystals were etched in HNOs and HC1 solutions, or annealed in Oi gas and vacuum at 800 °C and 950 °C to obtain flat surfaces in atomic scale. When etched in solutions and annealed in vacuum, the samples had rough O-terminated surfaces. The Znterminated and O-terminated surfaces had clear step/terrace structures only when treated in O2 gas at 950 °C for 3 hours. The CAICISS spectra were successfully analyzed on the basis of the step/terrace structure with the steps of half c-axis in height.
AB - The wurtzite-type ZnO is a polar crystal, and its ideal (0001) surface is terminated by Zn ions while the (000 1 ) surface is terminated by oxygen ions. The surface structures of ZnO single crystals were evaluated by atomic force microscopy (AFM) and coaxial impact-collision ion scattering spectroscopy (CAICISS). The ZnO crystals were etched in HNOs and HC1 solutions, or annealed in Oi gas and vacuum at 800 °C and 950 °C to obtain flat surfaces in atomic scale. When etched in solutions and annealed in vacuum, the samples had rough O-terminated surfaces. The Znterminated and O-terminated surfaces had clear step/terrace structures only when treated in O2 gas at 950 °C for 3 hours. The CAICISS spectra were successfully analyzed on the basis of the step/terrace structure with the steps of half c-axis in height.
KW - Atomic force microscopy
KW - Coaxial impact-collision ion scattering spectroscopy
KW - Polar crystal
KW - Surface structure
KW - Zinc oxide
UR - http://www.scopus.com/inward/record.url?scp=0032661450&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032661450&partnerID=8YFLogxK
M3 - Article
VL - 169-170
SP - 109
EP - 112
JO - Key Engineering Materials
JF - Key Engineering Materials
SN - 1013-9826
ER -