Thermal and Luminescent Properties of M2Zn(VO3)(4) (M = Rb, Cs) / Slobodin B. V.,Ishchenko A. V.,Samigullina R. F.,Shul'gin B. V. // INORGANIC MATERIALS. - 2013. - V. 49, l. 8. - P. 834-838.

ISSN/EISSN:

0020-1685 / нет данных

Type:

Article

Abstract:

We have developed processes for the synthesis of the Rb2Zn(VO3)(4) and Cs2Zn(VO3)(4) tetrametavanadates. Rb2Zn(VO3)(4) has been prepared by solid-state reaction (350 degrees C) between presynthesized RbVO3 and ZnV2O6 powders, and Cs2Zn(VO3)(4) has been prepared by the Pechini method (sol-gel process). Both metavanadates crystallize in monoclinic symmetry (sp. gr. P2(1)/m). Thermochemical characterization results demonstrate that the vanadates undergo complex transformations during heating to 450 degrees C and subsequent cooling. As a result, the materials are in a nonequilibrium state at room temperature and consist of both the parent double metavanadates and their peritectic decomposition products. We believe that the formation of the structure of the M2Zn(VO3)(4) compounds from their melts is a kinetically hindered process. These compounds are structurally stable only at temperatures below 369 (Rb2Zn(VO3)(4)) or 420 degrees C (Cs2Zn(VO3)(4)). We have measured for the first time the diffuse reflectance and photoluminescence excitation spectra of the two tetrametavanadates in their emission range and their photoluminescence spectra at various excitation wave-lengths and determined their chromaticity coordinates. Their X-ray luminescence and scintillation decay characteristics have been determined for the first time under pulsed electron beam excitation. The electron excitation dissipation processes in the cesium and rubidium compounds are shown to be similar. We discuss the origin of the emission bands in the mixed vanadates and their potential application areas.

Author keywords:

нет данных

DOI:

10.1134/S0020168513080165

Web of Science ID:

ISI:000323064500016

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	AUG
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Multidisciplinary
Author-Email	Slobodin@ihim.uran.ru
ResearcherID-Numbers	Ishchenko, Aleksey/E-1017-2014
ORCID-Numbers	Ishchenko, Aleksey/0000-0002-9883-6652
Funding-Acknowledgement	Russian Foundation for Basic Research {[}11-03-00097-a]; Ural Branch of the Russian Academy of Sciences {[}12-T-3-1009]; Yeltsin Federal University; RF Ministry of Education and Science
Funding-Text	This work was supported by the Russian Foundation for Basic Research (project no. 11-03-00097-a), the Ural Branch of the Russian Academy of Sciences (grant no. 12-T-3-1009), Yeltsin Federal University (Support to Young Candidates of Science Program), and the RF Ministry of Education and Science (federal targeted program The Scientists and Science Educators of Innovative Russia, 2009-2013).
Number-of-Cited-References	12
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	16
Journal-ISO	Inorg. Mater.
Doc-Delivery-Number	200JJ