Electrical transport and crystallization in Cu+ ion substituted AgI–Ag2O–V2O5 glassy superionic system |
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| Institution: | 1. Physics Group, Birla Institute of Technology and Science Pilani (RJ), 333031, India;2. UGC-DAE-Consortium for Scientific Research, Indore (MP), 452017, India;1. Université du Québec à Trois-Rivières, Trois-Rivières, QC G9A5H7, Canada;2. Université du Québec à Montréal, Montréal, QC H3T1J4, Canada;1. School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha 410004, China;2. School of Material Science & Engineering, Guilin University of Electronic Technology, Guilin 541004, China;3. Department of Chemistry, Texas A&M University, 77843 TX, USA;4. College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China;1. Department of Physics, Guru Nanak Dev University, Amritsar 143005, India;2. Department of Environmental Engineering, College of Engineering, Sangmyung University, 31 Sangmyungdae-gil, Dongnam-gu, Cheonan, Chungnam Province, 330-720, Republic of Korea;3. Department of Biomedical, Chemical, and Environmental Engineering, 701 Engineering Research Center, University of Cincinnati, Cincinnati, OH 45221-0012, USA;4. Department of Physics, The University of the West Indies, St. Augustine, Trinidad and Tobago |
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| Abstract: | A new glassy solid electrolyte system CuxAg1 − xI–Ag2O–V2O5 has been synthesized. The structural, thermal and electrical properties of the samples have been investigated. The glassy nature of the samples is confirmed by X-Ray diffraction and Differential Scanning Calorimetry studies. The electrical conductivity of these samples increases with CuI content and approaches a maximum value of ∼ 10−2 Ω− 1 cm− 1 for x = 0.35 at room temperature. Ionic mobility measurements suggest that enhancement in the conductivity with Cu+ ion substitution may be attributed to increase in the mobility of Ag+ ions. The electrical conductivity versus temperature cycles carried out at well-controlled heating rate above Tg and Tc reveal interesting thermal properties. For lower CuI content samples conductivity exhibits anomalous rise above Tg and subsequent fall at Tc. It is also found that CuI addition into AgI–Ag2O–V2O5 matrix reduces the extent of crystallization. |
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