Raman spectra and phase composition of MnGeO3 crystals

MnGeO3 single‐crystal samples have been synthesized by optical zonal melting and spontaneous crystallization. X‐ray crystal analysis showed the first sample to be a two‐phase one with phase ratio as follows: 17% – monoclinic C2/c, and 83% – orthorhombic Pbca; the phase ratio of the second sample was...

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Published in:Journal of Raman spectroscopy 2016-05, Vol.47 (5), p.531-536
Main Authors: Oreshonkov, Aleksandr S., Gerasimova, Julia V., Ershov, Alexandr A., Krylov, Alexander S., Shaykhutdinov, Kirill A., Vtyurin, Aleksandr N., Molokeev, Maxim S., Terent'ev, Konstantin Y., Mihashenok, Natalia V.
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Language:English
Subjects:
clinopyroxene
lattice dynamics
orthopyroxene
Raman spectroscopy
Raman tensor analysis
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container_end_page 536
container_issue 5
container_start_page 531
container_title Journal of Raman spectroscopy
container_volume 47
creator Oreshonkov, Aleksandr S.
Gerasimova, Julia V.
Ershov, Alexandr A.
Krylov, Alexander S.
Shaykhutdinov, Kirill A.
Vtyurin, Aleksandr N.
Molokeev, Maxim S.
Terent'ev, Konstantin Y.
Mihashenok, Natalia V.
description MnGeO3 single‐crystal samples have been synthesized by optical zonal melting and spontaneous crystallization. X‐ray crystal analysis showed the first sample to be a two‐phase one with phase ratio as follows: 17% – monoclinic C2/c, and 83% – orthorhombic Pbca; the phase ratio of the second sample was unknown. Raman spectra have been produced for these samples. Lattice dynamics has been simulated and polarization dependencies of lines' intensities have been analyzed to interpret experimental Raman spectra and to attribute lines to the spectra of monoclinic and orthorhombic phases. Copyright © 2015 John Wiley & Sons, Ltd. MnGeO3 single‐crystal samples have been synthesized by optical zonal melting and spontaneous crystallization. X‐ray crystal analysis showed the first sample to be a two‐phase one with phase ratio as follows: 17% – monoclinic C2/c and 83% – orthorhombic Pbca; the phase ratio of the second sample was unknown. Lattice dynamics has been simulated and polarization dependencies of lines' intensities have been analyzed to interpret experimental Raman spectra and to attribute lines to the spectra of monoclinic and orthorhombic phases.
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subjects clinopyroxene
lattice dynamics
orthopyroxene
Raman spectroscopy
Raman tensor analysis
title Raman spectra and phase composition of MnGeO3 crystals
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