Dielectric, enhanced magnetic and magnetodielectric properties of hot pressed (BNBT-BFO)/PVDF composite films

The thick composites film 0.8(0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 )-0.2BiFeO 3 / Poly(vinylidene fluoride) (BNBT-BFO/PVDF) with 20 %, 30 %, 40 % and 50 % concentration of PVDF were synthesized by hot polymer press. The structural analysis was carried out by X-ray diffraction (XRD), which reveals th...

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Bibliographic Details
Published in:Journal of polymer research 2015-12, Vol.22 (12), p.1-7, Article 230
Main Authors: Rawat, Meera, Yadav, K.L.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Dielectric properties
Dielectrics
Diffraction
Industrial Chemistry/Chemical Engineering
Magnetic properties
Original Paper
Phases
Polymer Sciences
Polyvinylidene fluorides
Roughness
Thick films
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Summary:The thick composites film 0.8(0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 )-0.2BiFeO 3 / Poly(vinylidene fluoride) (BNBT-BFO/PVDF) with 20 %, 30 %, 40 % and 50 % concentration of PVDF were synthesized by hot polymer press. The structural analysis was carried out by X-ray diffraction (XRD), which reveals the crystalline phases corresponding to ferroelectric, ferrites and PVDF phases. The grain sizes and roughness of composites films were observed by using AFM analysis. Dielectric study of thick composites films were done with frequency and temperature and found that the effective dielectric permittivity of composites films decreases with increase in the volume fraction of PVDF at all the frequencies under investigation. The magnetic and magnetodielectric properties of composites films have been also systematically investigated and found to be enhanced as compare to BNBT-BFO with increase in PVDF.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-015-0874-4