Nonstoichiometry and superstructures

A.I. Gusev
Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, ul. Pervomayskaya 91, Ekaterinburg, 620219, Russian Federation

The way in which nonstoichiometry and order and disorder interrelate in solid phase compounds is discussed. Nonstoichiometry due to the presence of structural vacancies is widely found in such solid phase compounds as transition metal carbides, nitrides and oxides, and in related ternary interstitial compounds. It is shown that it is nonstoichiometry that determines the disordered or ordered distribution of atoms and vacancies. A review is given of the current status of research into disorder—order phase transitions in strongly nonstoichiometric cubic and hexagonal compounds. Symmetry analysis results for disorder—order and order—order phase transformations are considered in detail. Key superstructure types that form in nonstoichiometic compounds with vacancies in one or two sublattices are described.

PACS: 61.43.−j, 61.50.Ah, 61.50.Ks, 61.66.Fn, 61.72.jd, 61.72.jj (all)
DOI: 10.3367/UFNe.0184.201409a.0905
URL: https://ufn.ru/en/articles/2014/9/a/
Web of Science

000346959600001
Scopus

2-s2.0-84933499554
ADS NASA

2014PhyU...57..839G
Citation: Gusev A I "Nonstoichiometry and superstructures" Phys. Usp. 57 839–876 (2014)

BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks

Received: 24th, October 2013, revised: 26th, November 2013, accepted: 27th, November 2013

Оригинал: Гусев А И «Нестехиометрия и сверхструктуры» УФН 184 905–945 (2014); DOI: 10.3367/UFNr.0184.201409a.0905

References (142) Cited by (32) Similar articles (20) ↓

A.I. Gusev “Order-disorder transformations and phase equilibria in strongly nonstoichiometric compounds” Phys. Usp. 43 1–37 (2000)
A.A. Rempel’ “Atomic and vacancy ordering in nonstoichiometric carbides” Phys. Usp. 39 31–56 (1996)
A.I. Gusev “High-energy ball milling of nonstoichiometric compounds” Phys. Usp. 63 342–364 (2020)
V.G. Vaks, V.I. Zinenko, V.E. Schneider “Microscopic theories of order-disorder structural phase transitions in crystals” Sov. Phys. Usp. 26 1059–1086 (1983)
S.I. Sadovnikov, A.I. Gusev “Anisotropy of elasticity of strongly nonstoichiometric disordered cubic carbides MC_y (M= Ti, Zr, Hf, Nb, Ta) and monoxides MO_y (M = Ti, V, Nb)” Phys. Usp. 69 138–160 (2026)
V.A. Gritsenko “Atomic structure of the amorphous nonstoichiometric silicon oxides and nitrides” Phys. Usp. 51 699–708 (2008)
T.N. Kolobyanina “’Weird’ crystal structures of elements at high pressure” Phys. Usp. 45 1203–1211 (2002)
A.I. Gusev “Effects of the nanocrystalline state in solids” Phys. Usp. 41 49–76 (1998)
V.A. Gritsenko “Structure of silicon/oxide and nitride/oxide interfaces” Phys. Usp. 52 869–877 (2009)
A.D. Pogrebnjak, A.P. Shpak et al “Structures and properties of hard and superhard nanocomposite coatings” Phys. Usp. 52 29–54 (2009)
R.A. Andrievski “High-melting point compounds: new approaches and new results” Phys. Usp. 60 276–289 (2017)
B.A. Klumov “Universal structural properties of three-dimensional and two-dimensional melts” Phys. Usp. 66 288–311 (2023)
A.V. Nikolaev, A.V. Tsvyashchenko “The puzzle of the γ→α and other phase transitions in cerium” Phys. Usp. 55 657–680 (2012)
I.S. Lyubutin, A.G. Gavriliuk “Research on phase transformations in 3d-metal oxides at high and ultrahigh pressure: state of the art” Phys. Usp. 52 989–1017 (2009)
R. Folk, Yu. Holovatch, T. Yavorskii “Critical exponents of a three-dimensional weakly diluted quenched Ising model” Phys. Usp. 46 169–191 (2003)
G.V. Kozlov, V.U. Novikov “A cluster model for the polymer amorphous state” Phys. Usp. 44 681–724 (2001)
A.N. Utyuzh, A.V. Mikheyenkov “Hydrogen and its compounds under extreme pressure” Phys. Usp. 60 886–901 (2017)
I.K. Razumov, A.Y. Yermakov et al “Nonequilibrium phase transformations in alloys under severe plastic deformation” Phys. Usp. 63 733–757 (2020)
N.P. Kobelev, V.A. Khonik “A novel view of the nature of formation of metallic glasses, their structural relaxation, and crystallization” Phys. Usp. 66 673–690 (2023)
E.G. Maksimov, V.I. Zinenko, N.G. Zamkova “Ab initio calculations of the physical properties of ionic crystals” Phys. Usp. 47 1075–1099 (2004)

The list is formed automatically.