Temperature variation dielectric behavior of TiO₂ nanocabbages and doped W-182(AFLC)

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• 作者：Kaushik Pal^a ; Joy Sankar Roy^a ; Tapas Pal Majumder^a ; ^{tpm@klyuniv.ac.in} ; ^{tpmajumder1966@gmail.com} ; Sharmistha Ghosh^b ; Subir Kumar Roy^b ; Romana Schirhagl^c ; Roman Dabrowski^d
• 关键词：TiO2 nanocomposites ; W-182 (AFLC) ; Dielectric ; dc switching
• 刊名：Journal of Luminescence
• 出版年：2013
• 出版时间：April, 2013
• 年：2013
• 卷：136
• 期：Complete
• 页码：278-284
• 全文大小：1353 K

文摘

We successfully synthesized nanocabbage like structures of TiO₂ with diameter around 42 nm after annealing the anatase TiO₂ nanowires of diameter around 1.5 nm. We obtained an interesting photoluminescence and dielectric behavior of nanocabbage doped W-182 antiferroelectric liquid crystal (AFLC). We observed a blue shift of photoluminescence spectra by 3 nm for TiO₂ nanocabbage doped AFLC in comparison to TiO₂ nanowire doped AFLC. Significantly, we observed a single relaxation of mixed nanostructures. Due to the doping of AFLC in TiO₂ nanowires and nanocabbages, dc conductivity was decreased remarkably in comparison to pure TiO₂ nanocabbages. The threshold voltage was increased to 2 V and 4 V due to the doping of TiO₂ nanowires and TiO₂ nanocabbages in AFLC, respectively.