SYNTHESIS, HIGH-RESOLUTION ELECTRON-MICROSCOPY AND CRYSTAL-STRUCTURE REFINEMENT OF THE CLUSTER COMPOUND BA3NB16O23 BY X-RAY AND NEUTRON-DIFFRACTION / ZUBKOV VG,PERELEYAEV VA,TYUTYUNNIK AP,KONTSEVAYA IA,VORONIN VI,SVENSSON G // JOURNAL OF ALLOYS AND COMPOUNDS. - 1994. - V. 203, l. 1-2. - P. 209-216.

ISSN/EISSN:

0925-8388 / нет данных

Type:

Article

Abstract:

Ba3Nb16O23 was prepared by reducing a mixture of BaCO3 and Nb2O5 with acetylene soot under vacuum at 1550-1600-degrees-C. The structure was determined from high resolution electron microscopy images and was refined by the Rietveld technique using X-ray and neutron powder diffraction data. The unit cell parameters are a = 20.9301(4) angstrom, b = 12.4785(3) angstrom and c = 4.1619(1) angstrom, space group Cmmm, Z = 2. The crystal structure can be described as an intergrowth of BaNbO3 and NbO. Characteristic building units are quadruple chains of corner-sharing Nb6 octahedra connected via columns with a perovskite-type structure to form a three-dimensional network.

Author keywords:

SINGLE-CRYSTAL; OXONIOBATE; OCTAHEDRA

DOI:

10.1016/0925-8388(94)90737-4

Web of Science ID:

ISI:A1994MR90800037

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JAN 4
Publisher	ELSEVIER SCIENCE SA LAUSANNE
Address	PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND
Language	English
Keywords-Plus	SINGLE-CRYSTAL; OXONIOBATE; OCTAHEDRA
Research-Areas	Chemistry; Materials Science; Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy \& Metallurgical Engineering
ResearcherID-Numbers	Tyutyunnik, Alexander/P-2230-2015
Number-of-Cited-References	26
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	4
Journal-ISO	J. Alloy. Compd.
Doc-Delivery-Number	MR908