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IJEMS Vol.15(2) [April 2008] >


Title: Effect of calcium variation on dielectric response of the sol-gel derived CaCu₃Ti₄O₁₂ thin films
Authors: Maurya, Deepam
Kumar, Parveen
Singh, Devendra P
Agrawal, D C
Issue Date: Apr-2008
Publisher: CSIR
Abstract: The giant dielectric constant exhibited by CaCu₃Ti₄O₁₂ (CCTO) over a wide temperature and frequency range has generated considerable interest in this material. In this paper, we report the synthesis of sol-gel derived CCTO thin films with varying calcium content and their dielectric characterization. The room temperature XRD-patterns reveal the formation of a single perovskite phase. The dielectric constant, loss tangent and ac conductivity of these films have been investigated as a function of frequency at room temperature. The results show that with increase in the calcium content upto a certain limit the dielectric constant of these films increases.
Page(s): 107-110
ISSN: 0971-4588
Source:IJEMS Vol.15(2) [April 2008]

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