Crystal structure and magnetic properties of complex oxides Mg4-xNixNb2O9, 0 <= x <= 4 / Tarakina N. V.,Nikulina E. A.,Hadermann J.,Kellerman D. G.,Tyutyunnik A. P.,Berger I. F.,Zubkov V. G.,Van Tendeloo G. // JOURNAL OF SOLID STATE CHEMISTRY. - 2007. - V. 180, l. 11. - P. 3180-3187.

ISSN/EISSN:

0022-4596 / нет данных

Type:

Article

Abstract:

In the Mg4-xNixNb2O9 (0 <= x <= 4) system two ranges of solid solution have been found. One of the solid solutions has a corundum-related structure type (space group P (3) over bar c1); the second one adopts the II-Ni4Nb2O9 structure type (space group Pbcn). The unit cell constants and atomic positions have been determined and refined using neutron powder diffraction data. Electron diffraction and high-resolution transmission electron microscopy (HRTEM) from MgNi3Nb2O9 crystals identify the presence of planar defects and the intergrowth of several (structurally related) phases. The magnetic susceptibility of Mg3NiNb2O9, measured in the temperature range T = 2-300 K, shows no indications of magnetic ordering at low temperatures, while for MgNi3Nb2O9 there is a magnetic ordering at temperatures below 45.5 K. (C) 2007 Elsevier Inc. All rights reserved.

Author keywords:

Magnesium niobium oxide; Neutron powder diffraction; Rietveld refinement; Crystal structure; Electron diffraction; HREM; Magnetic properties MICROWAVE DIELECTRIC-PROPERTIES; NIOBIUM OXIDE; CERAMICS; REFINEMENT; NI4NB2O9; FILMS; NB; MG

DOI:

10.1016/j.jssc.2007.09.007

Web of Science ID:

ISI:000260636200025

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	NOV
Publisher	ACADEMIC PRESS INC ELSEVIER SCIENCE
Address	525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA
Language	English
Keywords-Plus	MICROWAVE DIELECTRIC-PROPERTIES; NIOBIUM OXIDE; CERAMICS; REFINEMENT; NI4NB2O9; FILMS; NB; MG
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear; Chemistry, Physical
Author-Email	tarakina@ihim.uran.ru
ResearcherID-Numbers	Tyutyunnik, Alexander/P-2230-2015 Hadermann, Joke/F-4644-2011 Tarakina, Nadezda/A-7870-2013
ORCID-Numbers	Tarakina, Nadezda/0000-0002-2365-861X Hadermann, Joke/0000-0002-1756-2566
Funding-Acknowledgement	Belgium Science Policy; Russian Foundation for Scientific Schools {[}SS 5138.2006.3]; ICDD {[}93-09 (2005-2006)]
Funding-Text	This work was supported by Belgium Science Policy, Russian Foundation for Scientific Schools, Grant SS 5138.2006.3 and ICDD Grant-in-Aid \# 93-09 (2005-2006).
Number-of-Cited-References	17
Usage-Count-Since-2013	13
Journal-ISO	J. Solid State Chem.
Doc-Delivery-Number	368PY