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Phase Equilibria in the YbTe-PbTe-Bi2Te3 System

机译:YbTe-PbTe-Bi2Te3系统中的相平衡

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The phase equilibria in the YbTe-PbTe-Bi_(2)Te_(3 )system were investigated by means of differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscope with energy dispersive analysis (SEM-EDS) techniques. Isothermal sections at 300 and 800 K, the liquidus surface projection as well as some isopleth sections were experimentally plotted. The already reported ternary YbPbTe_(2), YbBi_(2)Te_(4) and YbBi_(4)Te_(7) compounds were not confirmed. Wide solid solubility field of initial binary compounds was revealed and a solubility of YbTe in the ternary tetradymite-like layered compounds in the PbTe-Bi_(2)Te_(3) system are found to be about 2 mol%.
机译:通过差热分析(​​DTA),X射线衍射(XRD)和带能量色散分析的扫描电子显微镜(SEM-EDS)研究了YbTe-PbTe-Bi_(2)Te_(3)体系中的相平衡技术。实验绘制了300和800 K的等温截面,液相线表面投影以及一些等厚截面。未证实已经报道的三元YbPbTe_(2),YbBi_(2)Te_(4)和YbBi_(4)Te_(7)化合物。揭示了初始二元化合物的宽固体溶解度场,并且发现YbTe在PbTe-Bi_(2)Te_(3)体系中的三级四叠层状层状化合物中的溶解度为约2mol%。

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