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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2018, Volume 108, Issue 8, Pages 563–567
DOI: https://doi.org/10.1134/S0370274X18200080 (Mi jetpl5728) 		 
This article is cited in 3 scientific papers (total in 3 papers)

CONDENSED MATTER

Neutron spectroscopy of the atomic dynamics of La$_2$Zr$_2$O$_7$ at fluorite-pyrochlore structural transformations

P. S. Savchenkovab, E. A. Goremychkinc, V. V. Popovab, B. L. Shapirb, P. A. Borisovab, A. A. Yastrebtseva, B. R. Gaynanova, M. P. Krasnova, A. P. Menushenkova, P. A. Alekseevab

a National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia
b National Research Center Kurchatov Institute, Moscow, Russia
c Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, Russia
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DOI: https://doi.org/10.1134/S0370274X18200080
Abstract: The formation of the structural and dynamic properties of La$_2$Zr$_2$O$_7$ in the process of crystallization at the isothermal annealing of initially amorphous precursors obtained by the coprecipitation of corresponding salts has been studied by neutron spectroscopy. The existence of vibrational states characteristic of hydrogen, which is in one or another of the possible chemical states and is incorporated into a solid matrix, has been detected in the spectra of amorphous and fluorite phases. The DFT calculation of the phonon density of states has been performed to analyze the energy structure of experimental phonon spectra for various phases of the La$_2$Zr$_2$O$_7$ compound. The amount of hydrogen in the fluorite phase has been estimated.
Funding agency Grant number
Russian Science Foundation 18-12-00133
Received: 21.08.2018
Revised: 13.09.2018
English version:
Journal of Experimental and Theoretical Physics Letters, 2018, Volume 108, Issue 8, Pages 532–536
DOI: https://doi.org/10.1134/S0021364018200134
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: P. S. Savchenkov, E. A. Goremychkin, V. V. Popov, B. L. Shapir, P. A. Borisova, A. A. Yastrebtsev, B. R. Gaynanov, M. P. Krasnov, A. P. Menushenkov, P. A. Alekseev, “Neutron spectroscopy of the atomic dynamics of La$_2$Zr$_2$O$_7$ at fluorite-pyrochlore structural transformations”, Pis'ma v Zh. Èksper. Teoret. Fiz., 108:8 (2018), 563–567; JETP Letters, 108:8 (2018), 532–536
Citation in format AMSBIB
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    		Письма в Журнал экспериментальной и теоретической физики Pis'ma v Zhurnal Иksperimental'noi i Teoreticheskoi Fiziki
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