Phonon spectra of stoichiometric rare-earth compound of EuGa2S4

被引：8

作者：

Kato, A ^{[1
]}

Tanaka, V ^{[1
]}

Najafov, H ^{[1
]}

Iida, S ^{[1
]}

机构：

[1] Nagaoka Univ Technol, Nagaoka, Niigata 9402188, Japan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2005年 / 66卷 / 11期

关键词：

optical materials; infrared spectroscopy; raman spectroscopy; luminescence; phonons;

D O I：

10.1016/j.jpcs.2005.09.056

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Investigations of EuGa2S4 have been done on the photoluminescence (PL) related to the transition between 4f(6)5d and 4f(7) configuration of the Eu2+ ion and its excitation (PLE) spectra, Raman scattering and infrared absorption. The energies of phonons coupled to the ground and the excited states of the transition are analyzed to be 34 and 19 meV from the shapes of the PL and PLE bands, respectively. The former corresponds to the energy of the Raman line showing the highest intensity. The latter is close to the value obtained from analysis of the temperature dependence of the half width of the PL band. These correspondences indicate that the relevant emission of EuGa2S4 surely has phonon-terminated character. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：2072 / 2075

页数：4

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