We report the magnetoelectric, dielectric and magnetic properties of xCo(0.7)Zn(0.3)Fe(2)O(4)-(1 - x) Bi0.9La0.1FeO3 (x = 0.1, 0.2, 0.3 and 0.4) nanocomposites prepared by sol-gel method. The X-ray diffraction patterns of sintered pellets show the formation of composite phases. The average crystallite size obtain by Williamson-Hall plot for different nanocomposites were found to be in the range 70-80 nm, which are in agreement with particle size calculated from atomic force microscopy. Magnetoelectric voltage coefficient (alpha(E) = 315 mV/cm Oe) and the magnetocapacitance (MC = 3.1%) for x = 0.3 were found to be higher than other synthesized nanocomposites. (c) 2012 Elsevier Ltd. All rights reserved.