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Size dependence on infrared spectra of NaGdF4 nanocrystals.
Autorzy
Rok wydania
2006
Czasopismo
Numer woluminu
418
Strony
75-78
DOI
10.1016/j.cplett.2005.11.090
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The infrared spectra of NaGdF4 nanocrystalline powders were investigated. It was shown that the spectra demonstrated a significant dependence on the size of crystallites. In particular, the intensities of vibrational bands of IR spectra decreased proportionally to the inverse of crystallite size. The results are discussed in terms of confined phonon modes. The phonon confinement effect was most pronounced for lower energy vibrations and was observed both for stretching and bending vibrations of Gd–F and (Gd, Na)–F bonds as well as for T′(Na,Gd) vibrations.
Adres publiczny
https://doi.org/10.1016/j.cplett.2005.11.090
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