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The isothermal section of the phase diagram of the BaO–Tb2O3+δ–CuO system at 1173 K was constructed based on X-ray powder diffraction data. The existence of the compounds BaTbO3 (SrZrO3 structure… Click to show full abstract
The isothermal section of the phase diagram of the BaO–Tb2O3+δ–CuO system at 1173 K was constructed based on X-ray powder diffraction data. The existence of the compounds BaTbO3 (SrZrO3 structure type, I4/mcm, a = 0.6034(1), c = 0.8576(1) nm) and Ba44Cu45O90 (own structure type, Im-3m, a = 1.8266(3) nm) was confirmed in the binary BaO–Tb2O3 and BaO–CuO systems, respectively, but no ternary oxides were found. The investigation of samples with nominal composition A0.5Tb0.5TO3 (A = Ca, Sr or Ba, T = Ni or Zn) showed the presence of phases from the corresponding binary systems, or unreacted reagents.
Journal Title: Acta Physica Polonica A
Year Published: 2017
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