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Observation of large magnetodielectric and direct magnetoelectric behavior in LCMO/PVDF 0-3 nanocomposites
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Rietveld fitted XRD pattern of pristine LCMO nanoparticles with appropriate peaks. (b) Grain size of as prepared LCMO nanoparticles from FESEM. SEM image of the (c) polished surface and (d) fractured cross-sections of the LCMO/PVDF nanocomposite at f LCMO = 0.15 showing LCMO particles are separated by thin insulating polymer layers protecting short circuiting.

Image of FIG. 2.
FIG. 2.

Room temperature out-of-plane magnetization M(H) of nanocomposites with different weight fractions of LCMO. Inset: M(T) under ZFC and FC conditions for typical (f LCMO = 0.15) nanocomposite.

Image of FIG. 3.
FIG. 3.

(a) Magnetoelectric voltage coefficient α 33 as a function of H dc at resonance and (b) as a function of frequency at H dc = 5 kOe. (c) Maximum value of α 33 as a function of LCMO content. (d) α 3 j as a function of H dc magnitude and direction at resonance for the sample with 15 wt. % LCMO. Inset of (b) Frequency dependence of dielectric constant and dielectric loss for the same nanocomposite.

Image of FIG. 4.
FIG. 4.

(a) Temperature variation in ε eff of the f LCMO = 0.15 nanocomposite in the presence of magnetic field; inset shows the plot between the inverse temperature and the relaxation time for different applied fields; solid line is fitting curve. (b) Fitted AC conductivity vs frequency curves of nanocomposite at different weight fractions.

Image of FIG. 5.
FIG. 5.

(a) Magnetic field variation in MD (%) at 100 kHz of 0.15LCMO+PVDF nanocomposite at different temperatures. (b) Leakage current densities (J) as a function of applied electric field (E in kV/cm) for different LCMO concentrations.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Observation of large magnetodielectric and direct magnetoelectric behavior in LCMO/PVDF 0-3 nanocomposites