Glasses with varying molar ratios of PbO/BaO in the system BaO-PbO-TiO2-B2O3-SiO2 were prepared keeping (BaO + PbO)/TiO2 ratio equal to one. The glasses were ceramized by two-stage heat treatment. X-ray diffraction indicates ...

Glass of the nominal composition 64wt%(SrO·TiO2)-35 wt%(2SiO2·B2O3)-1 wt%(CoO) was prepared. The glass samples were subjected to heat treatment at 900 and 950°C. The phase progression in these glass ceramics from X-ray ...

Scebeek coefficient and DC resistivity of the solid solution Lal _~Na~Col _~Nb~O3 (001 ~< x <~0-99) have been measured in the temperature range 300-900 K. Seebeck coefficient is positive for all compositionsover the ...

MgO−Al2O3−SiO2 (MAS)-based glass-ceramic system was prepared using very-low-cost raw materials, i.e., talc, calcined alumina and calcined China clay with titanium dioxide as a nucleating agent. Glass-ceramics were prepared ...

The possibility of the formation of solid solution in the system Ca1 -x La x Ti1 -x Co x O3 for x≤0·5 has been investigated. X-ray diffraction studies show that compositions with x=0·05, 0·1, 0·2, 0·3 and 0·5 prepared by ...