Effective strategies for reduced dielectric loss in ceramic/ polymer nanocomposite film. Issue 7 (1st April 2021)

• Record Type: Journal Article
• Authors: Patel, Piyush Kumar; Rani, Jyoti; Yadav, K.L.
• Is Part Of: Ceramics international. Volume 47:Issue 7(2021)Part A
• Page Start: 10096
• Page End: 10103
• Publication Date: 2021-04-01
• Subjects: Hot pressing -- Nanocomposites -- Dielectric properties -- Atomic force microscopy; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2020.12.157
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A novel approach is explored by mixing a giant dielectric constant ceramic powder CaCu3 Ti4 O12 (CCTO) with varying concentrations of polyvinylidene fluoride (PVDF). The CCTO/PVDF nanocomposite films were synthesized through the hot-press method. We found a high dielectric constant (~142) for 40 vol% PVDF content in CCTO/PVDF nanocomposite film. The effective medium theory predicted the theoretical value of effective dielectric constant of CCTO/PVDF nanocomposite film, which is best fitted with experimental data. We report a very low value of dielectric loss (~0.027) for 70 vol% PVDF content in CCTO/PVDF nanocomposite film, which is due to the formation of β phase of PVDF in the samples. The formation of β phase of PVDF is confirmed by the fibril structure.