Dielectric Studies on CuO-Na<sub>2</sub>O-B<sub>2</sub>O<sub>3</sub>Glasses

• 作者: Abdelmagud Hassan Gomaa El Damrawi Lobna Sharaf El-Deen Norhan Atef
• 来源期刊: 玻璃与陶瓷期刊(英文)
• 学科: 工学
• 关键词: Electrical Measurement CUO Borate Glasses Impedance Spectroscopy
• 年，卷（期）: 2020,（4）
• 页码范围: 45-56
• 页数: 12页
• 分类号: TQ1

摘要

This work is aimed to shed light on <span style="font-family:;" "="">the </span><span style="font-family:;" "="">dielectric behavior of CuO containing glasses, since no publications concerning this issue have been presented before. Different glasses in the binary Na₂O-B₂O₃ systemwere prepared by melt annealing technique. XRD spectra have shown that the amorphous structure is dominant in all glasses containing mixed concentrations from CuO and Na₂O. The crystalline phases appeared only in glass free from Na₂O. The dielectric spectroscopy is applied to shed some light on the conduction mechanisms in terms of changing both the dielectric constant and the electrical modulus of the investigated glasses. The ac conductivity increases with increasing frequency and decreases with increasing CuO concentration. Both the dielectric constant and dissipation loss </span><span style="font-family:;" "="">is</span><span style="font-family:;" "=""> decreased with increasing frequency. Correlated barrier hopping (CBH) is considered an appropriate conduction mechanism results from the increase of frequency.</span>