A structural study of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 at high pressure

The structure of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 has been studied by means of X-ray and neutron powder diffraction at pressure up to 8.5 GPa. A phase transition from the cubic zinc blende structure to the hexagonal cinnabar structure was observ...

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Autores principales: Kozlenko, D P, Ehm, L, Hull, S, Knorr, K, Savenko, B N, Shchennikov, V V, Voronin, V I
Lenguaje:eng
Publicado: 2002
Materias:
Condensed Matter
Acceso en línea:http://cds.cern.ch/record/747565
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author Kozlenko, D P
Ehm, L
Hull, S
Knorr, K
Savenko, B N
Shchennikov, V V
Voronin, V I
author_facet Kozlenko, D P
Ehm, L
Hull, S
Knorr, K
Savenko, B N
Shchennikov, V V
Voronin, V I
author_sort Kozlenko, D P
collection CERN
description The structure of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 has been studied by means of X-ray and neutron powder diffraction at pressure up to 8.5 GPa. A phase transition from the cubic zinc blende structure to the hexagonal cinnabar structure was observed at P approx 1 GPa. The obtained structural parameters were used for the analysis of the geometrical relationship between the zinc blende and the cinnabar phases. The zinc blende-cinnabar phase transition is discussed in the framework of the Landau theory of phase transitions. It was found that the possible order parameter for the structural transformation is the spontaneous strain e sub 4. This assignment agrees with previously observed high pressure behaviour of the elastic constants of other mercury chalcogenides
id cern-747565
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2002
record_format invenio
spelling cern-7475652019-09-30T06:29:59Zhttp://cds.cern.ch/record/747565engKozlenko, D PEhm, LHull, SKnorr, KSavenko, B NShchennikov, V VVoronin, V IA structural study of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 at high pressureCondensed MatterThe structure of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 has been studied by means of X-ray and neutron powder diffraction at pressure up to 8.5 GPa. A phase transition from the cubic zinc blende structure to the hexagonal cinnabar structure was observed at P approx 1 GPa. The obtained structural parameters were used for the analysis of the geometrical relationship between the zinc blende and the cinnabar phases. The zinc blende-cinnabar phase transition is discussed in the framework of the Landau theory of phase transitions. It was found that the possible order parameter for the structural transformation is the spontaneous strain e sub 4. This assignment agrees with previously observed high pressure behaviour of the elastic constants of other mercury chalcogenidesJINR-E14-2002-198oai:cds.cern.ch:7475652002
spellingShingle Condensed Matter
Kozlenko, D P
Ehm, L
Hull, S
Knorr, K
Savenko, B N
Shchennikov, V V
Voronin, V I
A structural study of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 at high pressure
title A structural study of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 at high pressure
title_full A structural study of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 at high pressure
title_fullStr A structural study of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 at high pressure
title_full_unstemmed A structural study of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 at high pressure
title_short A structural study of the pseudo-binary mercury chalcogenide alloy HgSe sub 0 sub . sub 7 S sub 0 sub . sub 3 at high pressure
title_sort structural study of the pseudo-binary mercury chalcogenide alloy hgse sub 0 sub . sub 7 s sub 0 sub . sub 3 at high pressure
topic Condensed Matter
url http://cds.cern.ch/record/747565
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