Abstract

Composite thick films of xPoly(vinylidene-fluoride)-(1−x)[0.8(Bi0.5Na0.5)TiO3-0.2CoFe2O4] with x = 0.1, 0.2, 0.3 and 0.4 were synthesized by hot press method. X-ray diffraction pattern of the composite films indicate the existence of distinct peaks of poly(vinylidene-fluoride), (Bi0.5Na0.5)TiO3 and CoFe2O4 phases. The value of dielectric loss and saturation magnetization of polymer composite films decrease with increase in poly(vinylidene-fluoride) content. The magnetodielectric effect of the polymer composite films was found to improve with increasing poly(vinylidene-fluoride) content. The linear fitting of Δε ∼ γM2 gives the value of magnetoelectric interaction coefficient (γ) of polymer composite films.

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