An x-ray scattering study of Sn2P2S6: absence of incommensurate phase up to 1 GPa

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F13%3A00398275" target="_blank" >RIV/68378271:_____/13:00398275 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/0953-8984/25/11/115901" target="_blank" >http://iopscience.iop.org/0953-8984/25/11/115901</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0953-8984/25/11/115901" target="_blank" >10.1088/0953-8984/25/11/115901</a>

Result language
angličtina
Original language name
An x-ray scattering study of Sn2P2S6: absence of incommensurate phase up to 1 GPa
Original language description
The ferroelectric phase transition in a semiconductor Sn2P2S6 single crystal has been studied by means of high-resolution synchrotron x-ray diffraction in the pressure?temperature range where an incommensurate modulated phase has been anticipated for many years. In contrast with the predictions, the present measurements reveal only a direct ferroelectric?paraelectric phase transition close to T = 100 K, p = 1.1 GPa. In the vicinity of this phase transition, a characteristic critical diffuse scattering was observed, but no satellite peaks could be resolved there. It is concluded that the earlier hypothesis about the presence of an incommensurate phase and associated Lifshitz point in the temperature?pressure phase diagram of Sn2P2S6 is incorrect.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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