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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 80, Issue 11, Pages 831–834
(Mi jetpl2182)
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This article is cited in 15 scientific papers (total in 15 papers)
CONDENSED MATTER
Amorphization of cuprite, Cu$_2$O, due to chemical decomposition under high pressure
V. V. Sinitsyna, V. P. Dmitrievb, I. K. Bdikina, D. Machonb, L. Dubrovinskyc, E. G. Ponyatovskya, H.-P. Weberd a Institute of Solid State Physics RAS, 142432 Chernogolovka, Moscow District, Russia
b "Structure of Materials under Extreme Conditions", Swiss-Norwegian Beam Lines at ESRF, F-38043 Grenoble,
France
c Bayerisches Geoinstitut, Universitat Bayreuth, D-95440
Bayreuth, Germany
d LCr/IPMC/FSB, Swiss Federal Institute of Technology, CH-1015 Lausanne, Switzerland
Abstract:
Using synchrotron radiation and a diamond-anvil cell, a structural study of the phase transformations in Cu$_{2}$O is carried out from diffraction data obtained in-situ while heating at a pressure of 30 GPa. Around 140 $^\circ$C we observe a transition of Cu$_{2}$O to an amorphous state, with the amorphous state persisting to about 260 $^\circ$C. Further heating up to 400 $^\circ$C yields at first a nanocrystalline two-phase mixture of Cu+CuO; then with prolonged heating at 400 $^\circ$C full crystallization of this mixture. The present structural data are the first experimental evidence of solid state amorphization under high pressure as an intermediate stage of the high-pressure decomposition of complex compounds.
Received: 03.11.2004
Citation:
V. V. Sinitsyn, V. P. Dmitriev, I. K. Bdikin, D. Machon, L. Dubrovinsky, E. G. Ponyatovsky, H.-P. Weber, “Amorphization of cuprite, Cu$_2$O, due to chemical decomposition under high pressure”, Pis'ma v Zh. Èksper. Teoret. Fiz., 80:11 (2004), 831–834; JETP Letters, 80:11 (2004), 704–706
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https://www.mathnet.ru/eng/jetpl2182 https://www.mathnet.ru/eng/jetpl/v80/i11/p831
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