Size dependence on infrared spectra of NaGdF4 nanocrystals

被引：27

作者：

Bednarkiewicz, A

Maczka, M

Strek, W

Hanuza, J

Karbowiak, M

机构：

[1] Polish Acad Sci, Dept Excited State Spect, Inst Low Temp & Struct Res, PL-50422 Wroclaw, Poland

[2] Univ Wroclaw, Fac Chem, PL-50138 Wroclaw, Poland

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 418卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2005.11.090

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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. (c) 2005 Elsevier B.V. All rights reserved.

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页码：75 / 78

页数：4

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