synthesis of fedoped titanite and quasititanite structures and studying the effect of doping on physical and optical properties

Fe-doped titanite (ticasio5) and quasititanite (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 quasititanite 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 quasititanite structure is smaller than that of titanite structure. the results of colorimetry and reflection spectra showed that the color of the synthesized quasititanite structure was beige and yellowish beige while that of titanite structure was beige and brown beige, according to the ral color system.