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AC conductivity of superionic thallium sulfide crystals exposed to γ-irradiation
Modern Physics Letters B ( IF 1.8 ) Pub Date : 2021-10-07 , DOI: 10.1142/s0217984921505047
R. M. Sardarly 1 , F. T. Salmanov 1 , N. A. Aliyeva 1 , R. N. Mehdiyeva 1 , S. M. Gakhramanova 1
Affiliation  

The frequency dependence of the thallium sulfide (TlS) crystal impedance is analyzed in wide frequency and temperature range for the hopping and superionic conduction mechanisms. It has been established that in weak alternating electric fields, there is a hopping mechanism of charge transfer. The use of impedance spectroscopy methods in TlS crystals, at temperatures of 300, 350 and 400 K in the frequency range of 2*106 Hz and subjected to γ-irradiation doses 0, 0.25 and 0.75 MGy charge transfer processes, has been investigated. Hodographs constructed from the data of experimental measurements of 400 K, in the low-frequency region ( > 103 Hz) and regardless of the absorbed gamma quanta, indicating additional contributions to the conductivity, presumably corresponds to the fact that in the frequency range of the applied signal, carrier diffusion does not reach the diffuse layer. This type of hodographs at low frequencies is characteristic of the Warburg impedance.

中文翻译:

γ 辐照下超离子硫化铊晶体的交流电导率

对于跳跃和超离子传导机制,在宽频率和温度范围内分析了硫化铊 (TlS) 晶体阻抗的频率依赖性。已经确定在弱交变电场中,存在电荷转移的跳跃机制。在 TlS 晶体中使用阻抗谱方法,在 300、350 和 400 K 的温度下,在 2*10 6 Hz 的频率范围内,并经受γ- 辐射剂量 0、0.25 和 0.75 MGy 的电荷转移过程已被研究。由低频区域 400 K 的实验测量数据构建的全线图 ( > 103Hz)并且无论吸收的伽马量子如何,表明对电导率的附加贡献,大概对应于在所施加信号的频率范围内,载流子扩散没有到达扩散层的事实。这种类型的低频全息图是 Warburg 阻抗的特征。
更新日期:2021-10-07
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