X-ray diffractograms of xNiFe2O4-(1 − x)PZTNb with various x = 2%, 10%, 20%, 30%, 50%, 70%, and 100% concentrations.
SEM micrograph on surface and in fracture of xNiFe2O4-(1 − x)PZTNb ceramic composites for (a) x = 2%, (b) x = 30%, and (c) x = 70%.
Temperature dependence of (a) relative permittivity (ε) and (b) dielectric losses (tan δ) for xNF-(1 − x)PZTNb with different addition of Ni ferrite, at 1 MHz.
Frequency dependence of (a) real part of permittivity (ε′), (b) imaginary part of permittivity (ε″), and (c) tangent losses (tanδ) of xNF-(1 − x)PZTNb composites with different concentration of Ni ferrite, at room temperature.
Complex impedance spectra of xNF-(1 − x)PZTNb ceramic composites with x = 2, 10, 20, 30, 50, and 70 wt. %, at room temperature.
(a) Frequency dependence of the effective conductivity and (b) plot of log(σAC-σDC) versus logω2 for xNF-(1 − x)PZTNb ceramic composites with x = 2, 10, 20, 30, 50, and 70 wt. %.
P-E hysteresis loop of (a) for pure PZTNb and (b) xNF-(1 − x)PZTNb ceramic composites with x = 2, 10, 20, and 30 wt. % at 10 Hz.
Frequency dependences of the real part (a) and imaginary part (b) of permeability at room temperature, in xNF-(1 − x)PZTNb ceramic composites.
(a) Magnetization-magnetic field hysteresis loops of xNF-(1 − x)PZTNb magnetoelectric composites with different compositions and (b) their saturation magnetization and coercive fields.
Article metrics loading...
Full text loading...