Influence of rare-earth ion doping on dielectric properties of lithium zinc borate glasses

被引：4

作者：

Anjaiah, J. ^{[1
]}

Laxmikanth, C. ^{[2
]}

Mwanga, Stanley Ferdinand ^{[2
]}

Raju, P. ^{[1
]}

Ali, S. K. Mohammad ^{[1
]}

Shankar, J. ^{[1
]}

Rani, G. Neeraja ^{[1
]}

Mwankemwa, Benard ^{[2
]}

机构：

[1] Geethanjali Coll Engn & Technol, Dept Phys, Medchal 501301, TS, India

[2] Univ Dodoma, Dept Phys, Energy & Mat Res Lab, CNMS, Dodoma, Tanzania

来源：

OPTICAL MATERIALS | 2022年 / 131卷

关键词：

Ac conductivity; Dielectric properties; Rare-earth ions; Modifier oxide; Borate glasses; LUMINESCENCE PROPERTIES; CONDUCTIVITY; DEPENDENCE; SPECTRA;

D O I：

10.1016/j.optmat.2022.112718

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dielectric constant (epsilon '), loss factor (tan delta), and ac conductivity (Sigma ac) of 30 Li2O-10 ZnO-(60-x) B2O3: xLn2O3, where (x = 0 and 1) and (Ln = Pr, Nd, Sm, and Eu) were investigated using a frequency range of 102-105 Hz and temperature ranging from 30 to 250 degrees C in this work. Differential Scanning Calorimetry (DSC) technique was employed to confirm the glassy nature of the materials under study. The dielectric parameters epsilon ', tan delta, and Sigma ac rise when rare-earth ions are added to the glass matrix at any frequency or temperature. Dielectric breakdown and activation energies are lower in doped than in undoped glasses while ac current flows through them at room temperature. Rare-earth ion doping's dielectric parameter values decrease with temperature as atomic number (Z) rises. The dielectric parameter values for the Pr3+ doped glass matrix are the highest. QM tunnelling model was used to describe the ac conduction behaviour of these glasses.

引用

页数：7

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