Methodology and Algorithm of Multicomponent Analysis of Positron Annihilation Spectra for Nanostructured Functional Materials

Methodology for treatment of positron annihilation lifetime spectra by LT computer program in the nanostructured ceramic materials was proposed. Features of mathematical description of annihilation spectra was demonstrated. The algorithm for selection of optimum values of fitting and positron trappi...

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Bibliographic Details
Published inJournal of Nano- and Electronic Physics Vol. 9; no. 3
Main Authors Klym, H I, Ivanusa, A I, Kostiv, Yu M, Chalyy, D O, Tkachuk, T I, Dunets, R B, Vasylchyshyn, I I
Format Journal Article
LanguageRussian
Ukrainian
Published Sumy Ukraine Sumy State University, Journal of Nano - and Electronic Physics 01.07.2017
Subjects
Algorithms
Ceramics
Ceramics industry
Functional materials
Nanostructure
Porosity
Positron annihilation
Spectra
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Summary:Methodology for treatment of positron annihilation lifetime spectra by LT computer program in the nanostructured ceramic materials was proposed. Features of mathematical description of annihilation spectra was demonstrated. The algorithm for selection of optimum values of fitting and positron trapping parameters in nanovoids was shown. Annihilation spectra were analyzed for functional temperature-sensitive ceramics using LT program at different amount of components. It is shown that three-component fitting procedure enables to define the radius of nanopores in functional ceramic materials.
ISSN:2077-6772
2306-4277
DOI:10.21272/jnep.9(3).03037