Magnetic, dielectric and magnetodielectric properties of PVDF-La0.7Sr0.3MnO3 polymer nanocomposite film | Zendy

Ch. Thirmal | Zendy; Chiranjib Nayek | Zendy; P. Murugavel | Zendy; V. Subramanian | Zendy

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Magnetic, dielectric and magnetodielectric properties of PVDF-La0.7Sr0.3MnO3 polymer nanocomposite film

Author(s) -

Ch. Thirmal,

Chiranjib Nayek,

P. Murugavel,

V. Subramanian

Publication year - 2013

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4830282

Subject(s) - materials science , dielectric , nanocomposite , composite material , ferroelectricity , composite number , curie temperature , ferromagnetism , relaxation (psychology) , arrhenius equation , condensed matter physics , dielectric loss , activation energy , chemistry , physics , optoelectronics , organic chemistry , psychology , social psychology

We have investigated the structure, magnetic and dielectric properties of PVDF-La0.7Sr0.3MnO3 polymer nanocomposite thick film fabricated by dip coating technique along with the magnetodielectric effect. The structure and dielectric properties show the enhanced β phase in the composite compared to the PVDF film. The coupling between the ferroelectric and magnetic phases in the composite is revealed in the form of dielectric anomaly at the ferromagnetic Curie temperature. We observed 1.9% magnetodielectric effect at 300 K with the possibility of enhanced effect near the transition temperature. In addition, the analysis of the electric modulus indicates that the composite exhibits interfacial related relaxation and it follows Arrhenius Law. Our study suggests that the ac conductivity of the PVDF-La0.7Sr0.3MnO3 composite could be explained by correlated barrier hopping mechanism

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