Synthesis of Fe-Doped Titanite and Quasi-Titanite Structures and Studying the Effect of Doping on Physical and Optical Properties

Fe-doped titanite (TiCaSiO5) and quasi-titanite (Ti0.5CaSi1.5O5) compositions were synthesized by the ceramic method. For each structure, two samples with 0.1 mol% and 0.2 mol% Fe were used. The synthesized samples were homogenized using a planetary ball mill in 2-ethylhexyl stearate solvent and then printed on the ceramic with screen printing system. The samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), dynamic light scattering (DLS), UV-Vis spectroscopy and CIE L*a*b*colorimetry methods. XRD results showed that more iron has entered to the titanite structure relative to the quasi-titanite structure with different crystal parameters. The SEM images of the powder and the printed ceramic as well as DLS results showed that the particle size of the quasi-titanite structure is smaller than that of titanite structure. The results of colorimetry and reflection spectra showed that the color of the synthesized quasi-titanite structure was beige and yellowish beige while that of titanite structure was beige and brown beige, according to the RAL color system.