S Hull and D A Keen 1996 J. Phys.: Condens. Matter 8 6191 doi:10.1088/0953-8984/8/34/009
Superionic behaviour in copper(I) chloride at high pressures and high temperatures
S Hull and D A Keen
Show affiliationsNeutron powder diffraction studies of copper(I) chloride have been performed at pressures to 7.3 kbar and temperatures to 740 K. The presence of a solid phase at pressures greater than 
kbar and temperatures greater than 
, identified in previous differential thermal analysis studies, is confirmed. This phase, labelled CuCl-III, has a cubic structure, space group 
. The chlorine anions form a body-centred cubic sublattice and the copper cations are randomly distributed over the 12(d) tetrahedral sites at 
etc. Both the basic structure and the nature of the thermally induced disorder appear similar to those shown by the ambient pressure superionic phases 
and 
. As a result, CuCl can no longer be considered an anomalous (non-superionic) member of the family of binary, tetrahedrally coordinated halide compounds.
- PACS
- Subjects
- Dates
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Issue 34 (19 August 1996)
Received 12 March 1996, in final form 28 May 1996
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Superionic behaviour in copper(I) chloride at high pressures and high temperatures
S Hull and D A Keen 1996 J. Phys.: Condens. Matter 8 6191
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