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

doi:DOI: 10.1016/j.mencom.2019.09.002

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

Institute of Materials Physics (5170)

Research output: Contribution to journal › Article › peer-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 language	English
Pages (from-to)	486-488
Journal	Mendeleev Communications
Volume	29
Issue number	486-488
DOIs	https://doi.org/DOI: 10.1016/j.mencom.2019.09.002
Publication status	Published - 2019

Fields of Expertise

Advanced Materials Science

Access to Document

DOI: 10.1016/j.mencom.2019.09.002Licence: Other

Cite this

@article{e788cddb8bb5469ea5697a9483f05340,

title = "Size effect in nonstoichiometric titanium monoxide and vanadium carbide nanocrystals measured by positron lifetime spectroscopy",

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.",

author = "Rempel, \{A. A.\} and A.A. Valeeva and A.S. Kurlov and Gregor Klinser and Wolfgang Sprengel",

year = "2019",

doi = "DOI: 10.1016/j.mencom.2019.09.002",

language = "English",

volume = "29",

pages = "486--488",

journal = "Mendeleev Communications",

issn = "0959-9436",

publisher = "Mendeleevskie Soobshcheniya",

number = "486-488",

}

TY - JOUR

T1 - Size effect in nonstoichiometric titanium monoxide and vanadium carbide nanocrystals measured by positron lifetime spectroscopy

AU - Rempel, A. A.

AU - Valeeva, A.A.

AU - Kurlov, A.S.

AU - Klinser, Gregor

AU - Sprengel, Wolfgang

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

UR - https://www.sciencedirect.com/science/article/pii/S0959943619302123

U2 - DOI: 10.1016/j.mencom.2019.09.002

DO - DOI: 10.1016/j.mencom.2019.09.002

M3 - Article

SN - 0959-9436

VL - 29

SP - 486

EP - 488

JO - Mendeleev Communications

JF - Mendeleev Communications

IS - 486-488

ER -

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

Abstract

Fields of Expertise

Access to Document

Other files and links

Cite this