The size and strain effects on the Raman spectra of Ce1-xNdxO2-δ (0≤x≤0.25) nanopowders

被引：119

作者：

Dohcevic-Mitrovic, ZD

Scepanovic, MJ

Grujic-Brojcin, MU

Popovic, ZV

Boskovic, SB

Matovic, BM

Zinkevich, MV

Aldinger, F

机构：

[1] Ctr Solid State Phys & New Mat, Inst Phys, Belgrade 11080, Serbia Monteneg

[2] Inst Nucl Sci, Belgrade 11001, Serbia Monteneg

[3] Max Planck Inst Metallforsch, D-70569 Stuttgart, Germany

来源：

SOLID STATE COMMUNICATIONS | 2006年 / 137卷 / 07期

关键词：

CeO2; doped nanopowders; SPRT synthesis; Raman scattering; confined phonons;

D O I：

10.1016/j.ssc.2005.12.006

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Ultrafine Ce1-xNdxO2-delta (x = 0-0.25) powders were synthesized by self-propagating room temperature synthesis. Raman spectra were measured at room temperature in the 300-700 cm(-1) spectral range. The shift and asymmetric broadening of the Raman F-2g mode at about 454 cm(-1) in pure and doped ceria samples could be explained with combined size and inhomogenous strain effects. Increased concentration of O2- vacancies with doping is followed by an appearance of new Raman feature at about 545 cm(-1). (c) 2005 Elsevier Ltd. All rights reserved.

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收藏

页码：387 / 390

页数：4

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