Phase transitions in nonstoichiometric strontium tantalates with the cryolite structure / Animitsa IE,Titova SG,Neiman AY,Kochetova NA,Bronin DI,Isaeva EV // CRYSTALLOGRAPHY REPORTS. - 2002. - V. 47, l. 6. - P. 991-995.

ISSN/EISSN:

1063-7745 / нет данных

Type:

Article; Proceedings Paper

Abstract:

The structural transformations of Sr6Ta2O11 and Sr5.92Ta2.08O11.12 oxygen-deficient cryolites with variations in the partial pressures of oxygen p(O-2) and water vapor p(H2O) are investigated using X-ray diffraction, thermogravimetry, and electrical conductivity measurements. It is found that a change in the oxygen partial pressure leads to a phase transition accompanied by the transformation of the cubic cell into the tetragonal cell, most probably, due to ordering of oxygen vacancies. The intercalation of water into the matrix of the complex oxides under investigation results in a structural-chemical transformation during which the solid solution undergoes a transition to an oxyhydrate phase of variable composition and the cubic cell transforms into the orthorhombic cell. (C) 2002 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

нет данных

DOI:

10.1134/1.1523546

Web of Science ID:

ISI:000180329000017

Соавторы в МНС:

Другие поля

Поле	Значение
Month	NOV-DEC
Note	Symposium on Phase Transitions in Solid Solutions and Alloys, SOCI, RUSSIA, 2001
Publisher	MAIK NAUKA/INTERPERIODICA PUBL
Address	C/O AMERICAN INST PHYSICS, 2 HUNTINGTON QUANDRANGLE, STE 1NO1, MELVILLE, NY 11747-4502 USA
Language	English
Research-Areas	Crystallography
Web-of-Science-Categories	Crystallography
ResearcherID-Numbers	Titova, Svetlana/D-2316-2013
Number-of-Cited-References	8
Usage-Count-Since-2013	16
Journal-ISO	Crystallogr. Rep.
Doc-Delivery-Number	634FH