Nonlinear current-voltage and giant dielectric properties of Al3+ and Ta5+ co-doped TiO2 ceramics

Wattana Tuichai,Supamas Danwittayakul,Narong Chanlek,Prasit Thongbai

Materials Research Bulletin（2019）

引用 32|浏览3

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摘要

•(Al1/2Ta1/2)0.05Ti0.95O2 exhibits a very low tanδ˜0.012 and high ε′˜104.•Excellent dielectric―temperature stability (Δε′˜2.69% at 150 °C) is achieved.•(Al1/2Ta1/2)0.05Ti0.95O2 exhibits nonlinear current-voltage properties.•Giant dielectric and electrical properties are originated at internal interfaces.

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关键词

Nonlinear I-V behavior,Raman spectroscopy,Impedance spectroscopy,Colossal/giant dielectric material,TiO2

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