Improved magnetoelectric coupling in Mn and Zn doped CoFe2O4-PbZr0.52Ti0.48O3 particulate composite

In this letter, Mn and Zn simultaneously substituted CoFe2O4, Co0.6Zn0.4Fe1.7Mn0.3O4 has been proposed as magnetostrictive component having the maximum in plane piezomagnetic coupling coefficient (q(11) + q(12) similar to 0.070 ppm/Oe) at a field of H similar to 300 Oe with appreciable saturation values of longitudinal and transverse magnetostriction coefficients (lambda(11)similar to-20 ppm and lambda(12)similar to 10 ppm). On incorporating this in composite (i.e., (x) PbZr0.52Ti0.48O3-(1-x) Co0.6Zn0.4Fe1.7Mn0.3O4) preparation, maximum magnetoelectric voltage coefficients (alpha(E) ) 122 mV/cm Oe) was obtained in sample x=0.90 at ac magnetic field of amplitude similar to 1 Oe and frequency similar to 1 kHz. (C) 2011 American Institute of Physics. [doi:10.1063/1.3562949]