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