Lithium nanoparticles in lithium fluorite crystals

Using intensive optical absorption techniques we studied formation of lithium nanoparticles in LiF crystals under 60Co-γ-irradiation in the dose range of 105–109 R at 300 K. At 106 R the F-center absorption band 4.95 eV grows up D>3 and splits into a symmetric doublet of narrow resonances similar...

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Bibliographic Details
Published in:Journal of physics. Conference series 2012-01, Vol.391 (1), p.12172-8
Main Authors: Ibragimova, E M, Mussaeva, M A, Kalanov, M U, Mukhamedshina, N M, Sandalov, V N
Format: Article
Language:English
Subjects:
Absorption spectra
Crystal defects
Crystals
Divacancies
Electrical conductivity
Electrical resistivity
Fluorite
Gamma irradiation
Lithium
Lithium fluoride
Nanoparticles
Nanorods
Physics
Plasmons
Radiation dosage
Surface chemistry
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Summary:Using intensive optical absorption techniques we studied formation of lithium nanoparticles in LiF crystals under 60Co-γ-irradiation in the dose range of 105–109 R at 300 K. At 106 R the F-center absorption band 4.95 eV grows up D>3 and splits into a symmetric doublet of narrow resonances similar to s1-metal nanoparticles surface plasmons. The maximal concentration 3.3·1017 cm−3 corresponds to ~14 nm distance between F-centers when they form F-F-pair and then M-center. Absorption band of divacancies 2.75 eV splits into triplet at > 107 R, when Lin nanoparticles 3.26 eV are formed. Twinned LiF lattice provides the defects ordering and assembling of Lin nanorods with the size of 8 nm related with the peak electric conductivity at 240–280 K.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/391/1/012172