High-Temperature Conductivity and Structure of Y-2(WO4)(3) Ceramics / Khaliullin Sh. M.,Khaliullina A. Sh.,Neiman A. Ya. // RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B. - 2016. - V. 10, l. 1. - P. 62-68.

ISSN/EISSN:

1990-7931 / 1990-7923

Type:

Article

Abstract:

The magnitude and character of conductivity were studied for Y-2(WO4)(3) ceramics synthesized by the ceramic (from oxides) and organic-nitrate procedures. Investigation of the dependence sigma(alpha(o2)) and measurements of the ion transport numbers of charge carriers by the EMF method showed that Y-2(WO4)(3) is basically an ion conductor. The conductivity is largely determined by the sample preparation conditions related to the dependence of the specific surface area and powder grain size on the synthetic procedure. The maximum high-temperature conductivity of Y-2(WO4)(3) was 2.51 x 10(-4) S/cm, which roughly corresponds to the conductivities of Sc-2(WO4)(3) and In-2(WO4)(3) measured under the same conditions. It was confirmed that Y-2(WO4)(3) crystallizes as a mixed monoclinic-orthorhombic structure at 1000 degrees C. The character of water incorporation in hydrated Y-2(WO4)(3) crystals was studied by thermogravimetry and diffuse reflectance IR spectroscopy. A qualitative model of water intercalation was suggested.

Author keywords:

yttrium tungstate; electric conductivity; conductivity; transport numbers; hydration; orthorhombic; ionic conductor NEGATIVE THERMAL-EXPANSION; OXIDES; LN

DOI:

10.1134/S1990793116010176

Web of Science ID:

ISI:000376640200009

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
EISSN	1990-7923
Keywords-Plus	NEGATIVE THERMAL-EXPANSION; OXIDES; LN
Research-Areas	Physics
Web-of-Science-Categories	Physics, Atomic, Molecular \& Chemical
Author-Email	Khaliullin@ihim.uran.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}14-03-00804]
Funding-Text	This study was financially supported by the Russian Foundation for Basic Research (grant no. 14-03-00804).
Number-of-Cited-References	24
Usage-Count-Last-180-days	2
Usage-Count-Since-2013	2
Journal-ISO	Russ. J. Phys. Chem. B
Doc-Delivery-Number	DM8UO