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A reversal of magnetization requiring only the application of an electric field can lead low-power devices by replacing conventional magnetic switching methods．As such，there has been a tremendous revival of activity in the field of magnetoelectrics，motivated largely by the entirely new device application promises that would be enabled by electric-field control of magnetism．With remarkable large magnetoelectric coupling effect and greater design flexiblity,magnetoelectric composites have been utilized to realize electrically control magnetization．In this work，research seeks to explore the extent of electrically tuning magnetoelectrics，specially for lead-free novel systems of LiNbO3-CoFe2O4(LNO-CFO) nanocomposite，NaNbO3-CoFe2O4(NNO-CFO) nanocomposite，NaNbO3-NiFe2O4(NNO-NFO)composite and(Co，Mg)(Al，Fe)2O4 nanocomposite．Herein，we present discoveriesof new composite magnetoelectrics which reveal intriguing coupling between ferroelectric and magnetic orders．The composite systems were characterized magnetoelectrically by studying the magnetic responses upon applying electric fields． Remarkable converse magnetoelectric coefficients were obtained.