Document Detail


Structural behaviour of alkaline sulfides under compression: High-pressure experimental study on Cs(2)S.
MedLine Citation:
PMID:  21823716     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The high-pressure behaviour of cesium sulphide Cs(2)S has been studied up to 19 GPa at room temperature using angle-dispersive x-ray powder diffraction in a diamond-anvil cell. X-ray results show that the initial anticotunnite-type structure (S.G. Pnma) seems to undertake a continuous transformation to a distorted Ni(2)In-type structure (also with S.G. Pnma), starting below 1 GPa and being almost completed at 5 GPa. The profile of the x-ray diffraction patterns did not change noticeably from this pressure to 17 GPa. The observed structural changes in Cs(2)S are discussed in relation to the high-pressure behaviour of the rest of alkaline sulfides and their systematic trends are pointed out. Finally, we discuss the analogies between the structures of alkaline-metal chalcogenides and those of the cationic arrays of their corresponding oxides (sulfates, selenates, and tellurates) comparing the insertion of oxygen and the application of pressure.
Authors:
D Santamaría-Pérez; A Vegas; C Muehle; M Jansen
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  The Journal of chemical physics     Volume:  135     ISSN:  1089-7690     ISO Abbreviation:  -     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-8-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0375360     Medline TA:  J Chem Phys     Country:  -    
Other Details:
Languages:  ENG     Pagination:  054511     Citation Subset:  -    
Affiliation:
Departamento de Química Física I, Universidad Complutense de Madrid, Avda. Complutense s∕n, 28040 Madrid, SpainInstituto de Química Física "Rocasolano", CSIC, Serrano 119, 28006 Madrid, SpainMax-Planck Institut für Festkörperforschung, Heisenbergstrasse 1, 70569 Stuttgart, Germany.
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