Magnetoelectric properties of 0.2CoFe2O4-0.8BaTiO3 composite prepared by organic method

We have successfully synthesized CoFe
₂
O
₄
/BaTiO
₃
composite nanoparticles with core-shell structure using a new organosol crystallization method. The weight fraction of the ferroelectric and the ferrimagnetic phase was 80% and 20%, respectively. The nanopowders were sintered to form a ceramic composite. The ceramics exhibits the magnetoelectric effect. The value of the converse magnetoelectric coefficient α
_c
measured by a modified SQUID susceptometer reaches 4.4·10
^-12
s·m
^-1
at the magnetic field μ
₀
H
_dc
= 0.15 T and T = 285 K.