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The title core-double shell magnetic materials, CaFe(Si2O6)@SiO2@titania, were successfully fabricated using CaFe(Si2O6) beads. The magnetic CaFe(Si2O6) core was covered by internal-shell silica thin films and external-shell titania nanoparticles. The coated silica shell on CaFe(Si2O6) beads was prepared by the sol-gel method using tetraethyl orthosilicate (TEOS) precursor. The external titania shell covered on CaFe(Si2O6)@SiO2 was prepared by hydrothermal processes at 180 °C for 48 hours using TiO2 particles and NaOH solution as precursors. The outer titania shell on CaFe(Si2O6)@SiO2 was made utilizing hydrothermal procedures at 180 °C for 48 hours, with TiO2 particles and NaOH solution as precursors. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), powder x-ray diffraction spectroscopy (XRD), and nitrogen adsorption-desorption apparatus were used to analyze the produced materials. The effects of NaOH concentration and TiO2 precursor quantity were studied. Titania nanorods were elongated as the NaOH concentration increased. When the dosage of TiO2 precursor was increased, the nanorod shape changed to the nanowire.
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