Size effect in nonstoichiometric titanium monoxide and vanadium carbide nanocrystals measured by positron lifetime spectroscopy

A. A. Rempel, A.A. Valeeva, A.S. Kurlov, Gregor Klinser, Wolfgang Sprengel

Research output: Contribution to journalArticleResearchpeer-review

Abstract

A size effect in nonstoichiometric titanium monoxide TiOy and vanadium carbide VCy nanocrystals containing high concentrations of structural vacancies was detected by electronpositron annihilation. The effect consists of a considerable
increase in the positron lifetime with the specific surface area. An analysis of the intensity of a long lifetime surface component in the positron annihilation spectra and the average positron lifetime for different nonstoichiometric compounds indicated a universal character of the observed size effect.
Original languageEnglish
Pages (from-to)486-488
JournalMendeleev Communications
Volume29
Issue number486-488
DOIs
Publication statusPublished - 2019

Fields of Expertise

  • Advanced Materials Science

Cite this

Size effect in nonstoichiometric titanium monoxide and vanadium carbide nanocrystals measured by positron lifetime spectroscopy. / Rempel, A. A.; Valeeva, A.A.; Kurlov, A.S.; Klinser, Gregor; Sprengel, Wolfgang.

In: Mendeleev Communications, Vol. 29, No. 486-488, 2019, p. 486-488.

Research output: Contribution to journalArticleResearchpeer-review

Rempel, A. A. ; Valeeva, A.A. ; Kurlov, A.S. ; Klinser, Gregor ; Sprengel, Wolfgang. / Size effect in nonstoichiometric titanium monoxide and vanadium carbide nanocrystals measured by positron lifetime spectroscopy. In: Mendeleev Communications. 2019 ; Vol. 29, No. 486-488. pp. 486-488.
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