Mastery of the structure of nanomaterials enables control of their properties to enhance their performance for a given application. A scalable method for synthesis of alpha-Fe2O3/TiO2 bi-component nanoparticles (NPs) with novel structure (TiO2 NPs filled into the a-Fe,203) by combining with wet-chemical route and ion implantation-based physical route has been proposed. Different implanted energy and the magnetic properties of bi-component a-Fe203/TiO2 NPs were investigated. The results illustrate alpha-Fe2O3/TiO2 composite NPs can be obtained by Ti ions implantation with different energy, and the saturation magnetization (M(s)) of the samples after ion implantation are significantly enhanced. The results also reveal that conversion phase from hematite to magnetite have been occurred under the thermal effects during ion implantation.