Physical and physicochemical processes accompanying powder synthesis, growth of PbMoO4 crystals, and their annealing in various media: I. Solid-state mechanism of the formation of the Pb2MoO5 microheterogeneous phase in PbMoO4 crystals
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Physical and physicochemical processes accompanying powder synthesis, growth of PbMoO4 crystals, and their annealing in various media: I. Solid-state mechanism of the formation of the Pb2MoO5 microheterogeneous phase in PbMoO4 crystals
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| Автор |
Gabrielyan, V. T.
Grunskiǐ, O. S. Gukasov, A. A. Denisov, A. V. Nikogosyan, N. S. Fedorova, L. M. |
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| Тематика |
ANNEALING
CRYSTAL GROWTH CRYSTALS MATHEMATICAL MODELS PHASE TRANSITIONS PHOTOLUMINESCENCE SOLIDIFICATION STOICHIOMETRY X RAY DIFFRACTION INTENSIVE MELT EVAPORATION PHASE FORMATION POSTGROWTH COOLING SYNTHESIS STAGES LEAD COMPOUNDS |
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| Описание |
In this study, the first of the proposed cycle, the conditions and the mechanism of nucleation and formation of particles of the Pb2MoO 5 phase in PbMoO4 crystals, which are due to the physicochemical features of the heating, melting, and solidification of PbMoO4, are considered. It is shown that preferred evaporation of one of the composite components of this compound, MoO3, leads to the violation of the initial stoichiometry and formation of excess PbO in a charge at the synthesis stage and in a melt during the crystal growth. The formation of the Pb2MoO5 phase in crystals with excess PbO occurs during their postgrowth cooling at temperatures below 930°C (eutectics between PbMoO4 and Pb2MoO5). The results of the differential thermal analysis, X-ray diffraction analysis, high-temperature powder diffraction study, and annealing of crystals in specific media confirm the solid-state mechanism of the formation of the Pb2MoO5 phase in PbMoO4 crystals. © 2005 Pleiades Publishing, Inc.
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| Дата |
2019-07-17T10:00:04Z
2019-07-17T10:00:04Z 2005 |
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| Тип |
Article
Journal article (info:eu-repo/semantics/article) Published version (info:eu-repo/semantics/publishedVersion) |
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| Идентификатор |
1063-7745
1562-689X https://www.scopus.com/record/display.uri?origin=resultslist&eid=2-s2.0-17544361845 https://elar.rsvpu.ru/handle/123456789/28018 10.1134/1.1887909 17544361845 2-s2.0-17544361845 Russian Center of Laser Physics, St. Petersburg State University, St. Petersburg, 198504, Russian Federation Institute for Physical Research, Academy of Sciences of Armenia, Ashtarak, 138410, Armenia Russ. State Prof. Pedagogical Univ., Yekaterinburg, 620012, Russian Federation Scopus Gabrielyan, V.T., Russian Center of Laser Physics, St. Petersburg State University, St. Petersburg, 198504, Russian Federation, Institute for Physical Research, Academy of Sciences of Armenia, Ashtarak, 138410, Armenia Grunskiǐ, O.S., Russian Center of Laser Physics, St. Petersburg State University, St. Petersburg, 198504, Russian Federation Gukasov, A.A., Institute for Physical Research, Academy of Sciences of Armenia, Ashtarak, 138410, Armenia Denisov, A.V., Russian Center of Laser Physics, St. Petersburg State University, St. Petersburg, 198504, Russian Federation Nikogosyan, N.S., Institute for Physical Research, Academy of Sciences of Armenia, Ashtarak, 138410, Armenia Fedorova, L.M., Russ. State Prof. Pedagogical Univ., Yekaterinburg, 620012, Russian Federation WOS:000228424200021 000228424200021 |
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| Язык |
en
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| Права |
Restricted accedd (info:eu-repo/semantics/restrictedAccess)
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| Формат |
text/html
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| Охват |
RSVPU
SCOPUS |
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| Издатель |
Pleiades Publishing Ltd
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| Источник |
Crystallography Reports
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