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Magnetodielectric behavior in La2CoMnO6 nanoparticles
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) (a) XRD pattern (b) TEM image; inset shows histogram of particles size, (C) HRTEM lattice image, and (d) SAED pattern of LCMO nanoparticles.

Image of FIG. 2.
FIG. 2.

(Color online) Temperature variation of electrical resistivity (ρ) with 0 T and 5 T fields; inset (a) shows field dependence of MR (%) at 150 K and 200 K and (b) shows the fitting to VRH model.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Temperature variation of imaginary component (χ′′) of ac magnetic susceptibility; (b) and (c) show temperature dependent of dielectric permittivity (ɛ′) and loss tangent (Tan δ), respectively, for different frequencies; inset of Fig. 2(c) shows lnτ vs. 1/T for 0 T and 5 T for both low temperature and high temperature dielectric relaxation regions; solid line indicates fitting to Eq. (2). (d) Temperature dependent of MD effect under 5 T for different frequencies.

Image of FIG. 4.
FIG. 4.

(Color online) Frequency variation (40-1 MHz) of ɛ′ for different temperatures under 0 T and 5 T; solid and open symbols indicate 0 T and 5 T fields, respectively.

Image of FIG. 5.
FIG. 5.

(Color online) Z′ versus Z′′ plots at different temperatures. Inset shows the equivalent circuit model.

Image of FIG. 6.
FIG. 6.

(Color online) (a) shows temperature dependent GB capacitance (CGB) its GB resistance (in inset) in 0 T and 5 T (b) shows temperature dependent bulk (CB) capacitance and its resistance (in inset) in 0 T and 5 T.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetodielectric behavior in La2CoMnO6 nanoparticles