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The preparation and properties of thick flexible three-phase composite films based on lead zirconium titanate (PZT) and various ferrites (nickel zinc ferrite (NZF) and cobalt ferrite (CF)) were reported in this study. Properties of three-phase composite films were compared with pure polyvinylidene fluoride (PVDF) and PZT-PVDF films. X-ray diffraction data indicated the formation of well crystallized structure of PZT and NZF/CF phases, without the presence of undesirable phases. Scanning electron micrographs showed that the ceramic particles were dispersed homogeneously in the PVDF matrix and atomic force microscopy confirmed that the size of the particles is around 30 nm. Non-saturated hysteresis loops were evident in all samples due to the presence of highly conductive ferrite phases. Under magnetic field of 10 kOe, composite films exhibited a typical ferromagnetic response. Dielectric properties were investigated in the temperature range from -128 to 250 ℃ and frequency range of 400 Hz-1 MHz. The results showed that the value of dielectric constant of the PVDF/PZT/ferrite composites increased about 25% above the one obtained for pure PVDF.


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PZT-NZF/CF ferrite flexible thick films: Structural, dielectric, ferroelectric, and magnetic characterization

Show Author's information J. D. BOBIĆa( )G. Ferreira TEIXEIRAbR. GRIGALAITIScS. GYERGYEKdM. M. Vijatović PETROVIĆaM. Ap. ZAGHETEeB. D. STOJANOVICa
Institute for Multidisciplinary Research, Belgrade University, Kneza Viseslava 1, Belgrade, Serbia
Universidade Federal de Goiás - UFG, Instituto de Química, Av Esperança s/n, Goiânia, GO, Brazil
Faculty of Physics, Vilnius University, Sauletekio al. 9, Vilnius, Lithuania
Institute Jozef Stefan, Jamova cesta 39, Ljubljana, Slovenia
Instituto de Quimica-UNESP, Araraquara, S.P., Brazil

Abstract

The preparation and properties of thick flexible three-phase composite films based on lead zirconium titanate (PZT) and various ferrites (nickel zinc ferrite (NZF) and cobalt ferrite (CF)) were reported in this study. Properties of three-phase composite films were compared with pure polyvinylidene fluoride (PVDF) and PZT-PVDF films. X-ray diffraction data indicated the formation of well crystallized structure of PZT and NZF/CF phases, without the presence of undesirable phases. Scanning electron micrographs showed that the ceramic particles were dispersed homogeneously in the PVDF matrix and atomic force microscopy confirmed that the size of the particles is around 30 nm. Non-saturated hysteresis loops were evident in all samples due to the presence of highly conductive ferrite phases. Under magnetic field of 10 kOe, composite films exhibited a typical ferromagnetic response. Dielectric properties were investigated in the temperature range from -128 to 250 ℃ and frequency range of 400 Hz-1 MHz. The results showed that the value of dielectric constant of the PVDF/PZT/ferrite composites increased about 25% above the one obtained for pure PVDF.

Keywords:

flexible thick films, three-phase composites, ferroelectricity, magnetic materials
Received: 06 December 2018 Revised: 16 April 2019 Accepted: 03 May 2019 Published: 04 December 2019 Issue date: December 2019
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Publication history

Received: 06 December 2018
Revised: 16 April 2019
Accepted: 03 May 2019
Published: 04 December 2019
Issue date: December 2019

Copyright

© The author(s) 2019

Acknowledgements

The results presented in this paper are realized with the financial support of Ministry of Education, Science and Technological Development of the Republic of Serbia trough the project III 45021.

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