Abstract
The structure of a cubic Cd6Ca crystal, which is constructed by a bcc packing of multiple-shell icosahedral atomic clusters and regarded as a 1/1 approximant to a binary Cd5.7Ca icosahedral quasicrystal, has been investigated using atomic-resolution annular dark-field scanning transmission electron microscopy (ADF-STEM). Direct imaging of the projected icosahedral clusters reveals no significant ADF-contrast around the cluster center, suggesting that the Cd atoms at the core of the cluster are not located at definite position such as the cubic atomic sites proposed by X-ray analysis, but distributed in a significantly disordered manner.
Original language | English |
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Pages (from-to) | 190-193 |
Number of pages | 4 |
Journal | Journal of Non-Crystalline Solids |
Volume | 334-335 |
DOIs | |
Publication status | Published - 2004 Mar 15 |
Externally published | Yes |
Event | 8th International Conference on Quasicrystals - Bangalore, India Duration: 2002 Sep 8 → 2002 Sep 13 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Ceramics and Composites
- Condensed Matter Physics
- Materials Chemistry