首页|Enhanced magnetoelectric characteristics of PbZr_(0.52)77_(0.48)O_3-CoFe_2O_4 composites: impact of molar ratio and phase connectivity
Enhanced magnetoelectric characteristics of PbZr_(0.52)77_(0.48)O_3-CoFe_2O_4 composites: impact of molar ratio and phase connectivity
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NETL
NSTL
Springer Nature
Magnetoelectric PbZr_(0.52)77_(0.48)O_3-CoFe_2O_4 composites with different molar fractions (PbZr_(0.52)77_(0.48)O_3/ CoFe_2O_4 = 3:1,2:1,1:1, and 1 : 2) were synthesized using citrate-sol-gel route. X-ray diffraction confirmed the presence of perovskite (PbZr_(0.52)77_(0.48)O_3) and spinel (CoFe_2O_4) structures in the produced composites. Scanning electron microscopy showed a homogeneous mixing of PbZr_(0.52)77_(0.48)O_3 and CoFe_2O_4 grains with dense microstructures. The composites' magnetic and ferroelectric hysteresis loops exhibited multiferroic behaviour. Impedance spectroscopy indicated that the composite's overall resistance (R_T) increases up to a 1 : 1 molar ratio due to better phase connectivity, which improves magnetoelectric (ME) coupling. When the molar ratio was 1 : 2, the R_T value dropped, which increased the interface charge carrier leakage and reduced the ME coupling. The composite with an equimolar ratio (1 : 1) achieved the highest ME coefficient (a_(ME)) value of 10.53 mV/cm.Oe. This value is 14 times higher than the equimolar composite produced by mixing the PbZr_(0.52)77_(0.48)O_3 and CoFe_2O_4 powders due to its dense microstructure, improved connectivity, highest resistance, and reduced leakage current density, making it optimal for ME device applications.
NETL
NSTL
Springer Nature
