Synthesis and characterization of NaIn(WO4)2:Cr3+ nanoparticles

被引：20

作者：

Maczka, M. ^{[1
]}

Hermanowicz, K. ^{[1
]}

Tomaszewski, P. E. ^{[1
]}

Zawadzki, M. ^{[1
]}

Hanuza, J. ^{[1
,2
]}

机构：

[1] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

[2] Wroclaw Univ Econ, Fac Ind & Econ, Dept Bioorgan Chem, PL-53345 Wroclaw, Poland

来源：

SOLID STATE SCIENCES | 2008年 / 10卷 / 01期

关键词：

double tungstate; X-ray; Raman; IR; optical properties; chromium(III);

D O I：

10.1016/j.solidstatesciences.2007.08.003

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

NaIn(WO4)(2):Cr3+ nanoparticles have been prepared by Pechini method. Resultant samples have been characterized by X-ray, transmission electron microscopy, Raman, infrared, absorption and luminescence. The average particle size of NaIn(WO4)(2):Cr3+ formed at 460 degrees C was about 46 nm and increased with the increase of annealing temperature. Vibrational spectra showed significant changes as a function of size which were explained as a result of phonon confinement effect. Luminescence studies revealed that the inter-electronic repulsion in the shell of d orbitals as well as covalent character of the chromium environment remains nearly the same irrespective of the nanocrystallite size. However, the strength of the electron-phonon coupling decreases with decreasing size of nanoparticles. (c) 2007 Elsevier Masson SAS. All rights reserved.

引用

页码：61 / 68

页数：8

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