Influence of stoichiometry and heat treatment conditions on the magnetic properties and phase constitution of Ba-ferrite powder prepared by sol-gel route are investigated.The results show that increasing time and temperature is beneficial to saturation magnetization(M_s),whereas the coercivity(H_(ci))is only slightly affected.The variation of the Fe/Ba ratio leads to the formation of different proportions of BaFe_(12)O_(19) and BaFe_2O_4,which directly af- fects the magnetic properties.