Dependence of Van-Vleck paramagnetism on the size of nanocrystals in superstoichiometric TiO{sub y}

Journal Article · Fri Apr 15 00:00:00 EDT 2016 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776116020138· OSTI ID:22617294

Nazarova, S. Z.; Rempel, A. A. ^[1]

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1. Russian Academy of Sciences, Institute of Solid State Chemistry, Ural Branch (Russian Federation)

In situ measurements of the magnetic susceptibility of titanium monoxide nanocrystals with superstoichiometric composition TiO{sub y} (y > 1) in the 300–1200 K temperature range showed that this value depends not only on the structural state of a sample, but also on the size of crystals. Analysis of data obtained for both ordered and disordered TiO{sub y} showed that the Van-Vleck paramagnetism is inversely proportional to the nanocrystal size because of breakage of the symmetry of local environment of the near-surface atoms of titanium and oxygen. The Van-Vleck paramagnetism contribution due to atomic-vacancy disorder in superstoichiometric titanium monoxide nanocrystals, as well as in the stoichiometric composition, is proportional to a deviation of the degree of long-range order from its maximum value.

• OSTI ID: 22617294
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 122, Issue 4; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CRYSTALS
DATA ANALYSIS
MAGNETIC SUSCEPTIBILITY
NANOSTRUCTURES
OXYGEN
PARAMAGNETISM
STOICHIOMETRY
SURFACES
SYMMETRY
TITANIUM OXIDES
VACANCIES