Improved Magneto-dielectric coupling in Yb-doped PbZrTiO 3 –Nd-doped CoFe 2 O 4 -based multiferroic composites

In this report, the multiferroic composites consisting of Yb-doped PbZrTiO3–Nd-doped CoFe2O4 of varying concentrations were synthesized by solid-state reaction method. The XRD studies of all the prepared samples confirm their crystallographic phases. The Williamson–Hall (W–H) approach was employed to obtain the average crystallite size and the strain in the composites. The SEM analysis ascertained the non-uniform distribution with agglomerated grains in the composites. The ferroelectric nature of the composites was confirmed from the P-E loops traced out. The M-H hysteresis loops obtained confirmed the ferromagnetic nature of the composites. The magneto-dielectric studies of the composites manifest the strong coupling between the ferrite and ferroelectric phases. The magneto-capacitance MC (%) revealed improvement at the higher ferrite content of the composites. The simultaneous occurrence of both the magnetic and ferroelectric (M-H and P-E) hysteresis loops and strong magneto-electric coupling signifies the multifunctionality and applicability of the prepared composite multiferroics in modern technology.