Crystal structure of ZnTe III at 16 GPa
- 26 September 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 73 (13) , 1805-1808
- https://doi.org/10.1103/physrevlett.73.1805
Abstract
The long-uncertain crystal structure of ZnTe phase III, stable above 11 GPa, has been determined at 16 GPa using angle-dispersive powder-diffraction techniques with an image-plate area-detector and synchrotron radiation. The structure is orthorhombic, space group Cmcm, and is site ordered. This is a new high-pressure structure, which can be derived by distortion of the rocksalt structure. But the coordination is quite different from NaCl: There are only five nea est neighbors (all unlike) around each atom at ∼2.7 Å and then three next-nearest-neighbors (of which two are like atoms) at 3.0-3.4 Å.Keywords
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