Vibrational spectra of selenium nanoparticles dispersed in a polymer

被引：39

作者：

Rajalakshmi, M ^{[1
]}

Arora, AK ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Div Mat Sci, Kalpakkam 603102, Tamil Nadu, India

来源：

NANOSTRUCTURED MATERIALS | 1999年 / 11卷 / 03期

关键词：

D O I：

10.1016/S0965-9773(99)00194-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Vibrational spectra of selenium nanoparticles dispersed in a polymer are studied using Raman scattering. Confined optical and acoustic phonons are investigated. Asymmetric line-shape of the confined optical phonons is fitted using the confinement model which takes into account the phonon dispersion curves. A wavelength selectivity of confined optical phonons is also observed. The low frequency Raman spectrum exhibits peaks that can be assigned to the spheroidal modes of the particles of size around 3 nm, consistent with that used for confined optical phonon line-shape analysis. (C) 1999 Acta Metallurgica Inc.

引用

页码：399 / 405

页数：7

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