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

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 a...

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Hauptverfasser: Arun, Kumar K, Thomas, Sunil, Ann Mary K A, Cyriac, Joseph, Biju, P R, Unnikrishnan, N V
Format: Tagungsbericht
Sprache:eng
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Zusammenfassung: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.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4862022