Microstructure, electrical conductivity and modulus spectra of CdI₂ doped nanocomposite-electrolytes

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• 作者：Ranadip Kundu^a ; ^b ; Debasish Roy^b ; Sanjib Bhattacharya^a ; ^{sanjib_ssp@yahoo.co.in}
• 关键词：Silver ion-conducting nanocomposites ; Total conductivity ; ac conductivity spectra ; Modulus spectra ; Relaxation time ; Conductivity and modulus scaling
• 刊名：Physica B: Condensed Matter
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：507
• 期：Complete
• 页码：107-113
• 全文大小：1927 K
• 卷排序：507

文摘

Ionic conductivity and dielectric behavior of Ag2O–CdI2–CdO nanocomposite system have been studied. X-ray diffraction has been carried out to obtain the crystallite sizes and the growth of CdO dispersed in glass-matrices. Total conductivity of them shows thermally activated nature. It is observed that total conductivity decreases and corresponding activation energy for conduction follows opposite behavior. The high-frequency ac conductivity may correspond to a nonrandom, correlated and sub-diffusive motion of Ag+ ions. Conductivity relaxation time is found to increase. The nature of scaling of the conductivity as well as modulus spectra indicates that the electrical relaxation of Ag+ is temperature independent but depends upon composition.