Dielectric and ac conductivity studies of ZnO/Eu3+: titanosilicate matrix

被引：1
|
作者：
Kumar, Arun K., V [1 ]
Thomas, Sunil [1 ]
Mary, Ann K. A. [1 ]
Joseph, Cyriac [1 ]
Biju, P. R. [1 ]
Unnikrishnan, N., V [1 ]
机构：
[1] Mahatma Gandhi Univ, Sch Pure & Appl Phys, Kottayam 686560, Kerala, India
来源：
OPTOELECTRONIC MATERIALS AND THIN FILMS (OMTAT 2013) | 2014年 / 1576卷
关键词：
Sol-gel; Dielectric; Cole-Cole parameter; TIO2;
D O I：
10.1063/1.4862022
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
ZnO nanoparticles /Eu3+ doped SiO2-TiO2 matrices were synthesized through sol-gel route. Structural and dielectric properties of ZnO nanocrystallites co-doped with Eu3+ in SiO2-TiO2 matrices were presented. The HRTEM and XRD measurements confirm the presence of ZnO nanocrystallites. The dielectric and electrical conductivity studies of the samples are completed for a frequency of 100 Hz to 2 MHz. The conductivity variation with the ZnO content in the Eu3+ doped SiO2-TiO2 system were explained by correlating the presence of ionic contribution to the electrical conductivity process. From the frequency dependence of dielectric constant and conductivity, the Cole-Cole parameters and power law parameters were evaluated. The dielectric relaxation phenomena were investigated using the dielectric moduli formulation.
引用
收藏
页码：209 / 211
页数：3
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