Structure and stability of nonstoichiometric cubic phase delta-NbN1.2(O,C) / Shalaeva EV,Mitrofanov BV,Shveikin GP // PHYSICA STATUS SOLIDI A-APPLIED RESEARCH. - 1996. - V. 154, l. 2. - P. 505-515.

ISSN/EISSN:

0031-8965 / нет данных

Type:

Article

Abstract:

The nonstoichiometric delta-niobium nitride with surplus content of nitrogen atoms and the NaCl-type structure (a = 0.439 nm), i.e. delta-NbN1.2(O, C), is stabilized in epitaxial deposited films. The diffraction patterns of these films display intensive diffuse scattering with regular intensity vanishings in the form of plane regions in the vicinity of structural and superstructural reciprocal space points of the delta-phase and in the form of spherical surfaces in the neighbourhood of structural points. The analysis performed shows that this scattering can be associated with the presence of mixed-nature short-range order regions in the nonstoichiometric delta-NbN1.2(O, C) phase which are characterized by longitudinal uncorrelated atomic displacement waves, as well as by concentration-type waves. The ordered oxycarbonitride phase (X-phase) described in the first approximation by the cubic lattice with parameter a = 0.392 nm is found to precipitate when annealing the films at T = 873 K. It has been established that the diffuse scattering occurring in delta-Nbn(1.2)(O, C) and the structure of short-range order regions exhibit certain correlation with the structure of the precipitated ordered phase - G100(x), approximate to 1.1G100(delta), = K-1; G010(x), approximate to 1.1G010(delta), = K-2 (where K-1 and K-2 are wave vectors of longitudinal atomic displacement waves characterizing short-range order).

Author keywords:

нет данных

DOI:

10.1002/pssa.2211540203

Web of Science ID:

ISI:A1996UM22300002

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Publisher	AKADEMIE VERLAG GMBH
Address	MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY
Language	English
Research-Areas	Materials Science; Physics
Web-of-Science-Categories	Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
Number-of-Cited-References	16
Usage-Count-Since-2013	1
Journal-ISO	Phys. Status Solidi A-Appl. Res.
Doc-Delivery-Number	UM223