Abstract
In this study, after doping ytterbium oxide (Yb2O3) to α-bismuth trioxide (α-Bi2O3) in the range of 9% ≤ n ≤ 20% in a series of different mole ratios, heat treatment was performed by applying a cascade temperature rise in the range of 700–790°C for 48 hours and new phases were obtained in the (Bi2O3)1 − x (Yb2O3) x system. After 24 hours of heat treatment at 700°C and 750°C and 48 hours of heat treatment at 790°C, mixtures containing 9–20 mol% Yb2O3 formed a face-centered cubic phase. With the help of X-ray diffraction (XRD), the crystal systems and lattice parameters of the solid solutions were obtained and their characterization was carried out. The surfaces of the solid solutions were detected by a scanning electron microscope (SEM). Thermal measurements were made by using a simultaneous DTA/TGA (differential thermal analysis/thermogravimetric analysis) system. The total conductivity (σT) in the δ-Bi2O3 doped with Yb2O3 system was measured using the four-probe DC method.
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