Frequency dependence of dielectric properties and conductivity of bulk copper sulfide
Frequency dependence of dielectric properties and conductivity of bulk copper sulfide
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DOI：
10.1016/j.mssp.2013.11.006
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发表时间：
2014-02
影响因子：
4.1
通讯作者：
H. Ali;H. Soliman;M. Saadeldin;K. Sawaby
中科院分区：
文献类型：
--
作者：
H. Ali;H. Soliman;M. Saadeldin;K. Sawaby
研究了球状Cu2S块体的介电性能和交流电导率随频率和温度的变化规律。计算了介电常数(ε1)和介电损耗(ε2)。绘制了不同温度下的电模复数平面图。在较低的频率范围内，交流电导率几乎与频率无关。用关联势垒跳跃模型解释了高频交流电导的机理。交流导电性是一种热激活过程。测定了不同频率下的交流激活能。
The dielectric properties and AC conductivity of bulk Cu2S in a pellet form were studied as functions of frequency and temperature. Both dielectric constant (ε1) and dielectric loss (ε2) were calculated. The complex plane diagram of the electric modulus was plotted for different temperatures. The AC conductivity was nearly independent of frequency in the low range. The mechanism of AC conductivity at higher frequency was interpreted in terms of the correlated barrier hopping model. AC conductivity is a thermally activated process. The AC activation energy was determined for different frequencies.