Positive temperature coefficient in lead phosphate glass-based composites with charges-hopping

Hammi, Maryama; Ziat, Younes; Lazrak, Charaf

doi:10.1016/j.matchemphys.2021.125370

Cited by 1 publication

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In most recent years, phosphate glasses have received growing interest across various scientific disciplines due to their potential technological uses and a variety of distinctive characteristics, [1][2][3] including a high thermal expansion coefficient, a low glass transition temperature, and a low softening temperature. Moreover, phosphate glasses have been used for making solid-state electrolytes in intermediate temperature fuel cells, [4] glass ceramics or bioglasses, [5,6] luminescent solar energy concentrators, [7] and storage of nuclear waste, [8] etc.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Electric and Dielectric Properties of Thallium Ions Doped Sodium Zinc Phosphate Glass

Belahcene,

Kharroubi,

Bourezg

et al. 2023

Physica Status Solidi (b)

View full text Add to dashboard Cite

Sodium zinc phosphate glasses modified by Tl2O addition of composition Na2−xTlxZnP2O7 (x = 0, 0.005, 0.01, and 0.015) are synthesized following the melt quenching technique. The structure of the glass samples is analyzed by the Fourier transform infrared absorption spectroscopy. The results suggest that the phosphate network is polymerized by the addition of Tl+ ions. The electrical conductivity, electric modulus, and dielectric constant characteristics of the glasses are measured over a wide continuous frequency range of 10−2 Hz–1 MHz and in the temperature range 293–473 K by the impedance spectroscopic method. The ac conductivity data are analyzed following the power law exponent (S) and the proposed correlated barrier hopping mechanism (CBH) is the most suitable conduction mechanism in the studied compositions. The electrical modulus formalism is applied to analyze the electric data to study their dielectric relaxation. Non‐Debye type relaxation is obtained. From the obtained results, the present glass can be used as a high‐energy capacitor.

show abstract