Magnetic, dielectric and magnetodielectric properties of PVDF-La{sub 0.7}Sr{sub 0.3}MnO{sub 3} polymer nanocomposite film
- Department of Physics, Indian Institute of Technology Madras, Chennai 600036 (India)
We have investigated the structure, magnetic and dielectric properties of PVDF-La{sub 0.7}Sr{sub 0.3}MnO{sub 3} 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-La{sub 0.7}Sr{sub 0.3}MnO{sub 3} composite could be explained by correlated barrier hopping mechanism.
- OSTI ID:
- 22251952
- Journal Information:
- AIP Advances, Vol. 3, Issue 11; Other Information: (c) 2013 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
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