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Pis'ma v Zh. Èksper. Teoret. Fiz., 2014, Volume 100, Issue 7, Pages 506–509 (Mi jetpl4138)  

This article is cited in 1 scientific paper (total in 1 paper)

CONDENSED MATTER

Metallization in the molten and solid state and phase diagrams of the GeSe$_2$ and GeS$_2$ under high pressure

V. V. Brazhkina, E. Bychkovb, M. V. Kondrina

a Institute for High Pressure Physics, Russian Academy of Sciences
b LPCA, UMR 8101 CNRS, Universite du Littoral

Abstract: We found that under high pressure, the GeSe$_2$ and GeS$_2$ melts pass into the metallic state. In the vicinity of the melting curves, their metallization begins at $3.5$ and $7$ GPa, respectively. The position of the semiconductor – metal transition line on the phase diagram for GeSe$_2$ liquid is established. The GeS$_2$-II and GeSe$_2$-III high-pressure crystalline modifications are semiconductors, whereas the GeSe$_2$-III modification at pressures exceeding $3.5$$4$ GPa is a metal ($\sigma\approx10^3 \Omega^{-1}\cdotcm^{-1}$). The $P$, $T$ phase diagrams for these compounds are constructed in the pressure range up to $10$ GPa. Metallization during the GeSe$_2$-II–GeSe$_2$-III transition is evidently responsible for the small jump of entropy and the corresponding almost vertical slope of the transition line.

DOI: https://doi.org/10.7868/S0370274X14190072

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English version:
Journal of Experimental and Theoretical Physics Letters, 2014, 100:7, 451–454

Bibliographic databases:

Document Type: Article
Received: 20.08.2014
Language: English

Citation: V. V. Brazhkin, E. Bychkov, M. V. Kondrin, “Metallization in the molten and solid state and phase diagrams of the GeSe$_2$ and GeS$_2$ under high pressure”, Pis'ma v Zh. Èksper. Teoret. Fiz., 100:7 (2014), 506–509; JETP Letters, 100:7 (2014), 451–454

Citation in format AMSBIB
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\by V.~V.~Brazhkin, E.~Bychkov, M.~V.~Kondrin
\paper Metallization in the molten and solid state and phase diagrams
of the GeSe$_2$ and GeS$_2$ under high pressure
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2014
\vol 100
\issue 7
\pages 506--509
\mathnet{http://mi.mathnet.ru/jetpl4138}
\crossref{https://doi.org/10.7868/S0370274X14190072}
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\transl
\jour JETP Letters
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\issue 7
\pages 451--454
\crossref{https://doi.org/10.1134/S0021364014190023}
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    Citing articles on Google Scholar: Russian citations, English citations
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    This publication is cited in the following articles:
    1. Brazhkin V.V. Bychkov E. Tsiok O.B., “High-precision measurements of the compressibility of chalcogenide glasses at a hydrostatic pressure up to 9 GPa”, J. Exp. Theor. Phys., 123:2 (2016), 308–317  crossref  isi  elib
  •       Pis'ma v Zhurnal ksperimental'noi i Teoreticheskoi Fiziki
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