Room-Temperature Synthesis of Sn2P2S6

Twenty-nanometer particles of Sn2P2S6are prepared at room temperature (RT) via a metathesis reaction in aqueous media. Mössbauer and Raman spectroscopy and X-ray diffraction characterization of these powders accord with data on Sn2P2S6synthesized at high temperature (HT). The phase transition and se...

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Bibliographic Details
Published inJournal of solid state chemistry Vol. 129; no. 1; pp. 157 - 159
Main Authors Bourdon, X., Prouzet, E., Cajipe, V.B.
Format Journal Article
LanguageEnglish
Published San Diego, CA Elsevier Inc 15.02.1997
Elsevier
Subjects
Chemistry
Exact sciences and technology
Inorganic chemistry and origins of life
Preparations and properties
Salts
Tin Thiophosphates
Chemical preparation
Room temperature
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Summary:Twenty-nanometer particles of Sn2P2S6are prepared at room temperature (RT) via a metathesis reaction in aqueous media. Mössbauer and Raman spectroscopy and X-ray diffraction characterization of these powders accord with data on Sn2P2S6synthesized at high temperature (HT). The phase transition and second harmonic generation known to exist in the HT form were not detected in the RT variant, suggesting a critical particle size >20 nm for the occurrence of polar order in Sn2P2S6. It is argued that thermal enhancement of the metathesis reaction and growth kinetics should lead to larger, ferroelectric Sn2P2S6crystallites.
ISSN:0022-4596
1095-726X
DOI:10.1006/jssc.1996.7244