Composition of PbTe oxides obtained by different methods
作者： Nicolas Berchenko , Volodymyr Savchyn , Sergey Fadeev , Oleg Afonin , Jakub Rysz
DOI: 10.1016/J.MSSP.2013.12.033
关键词:
摘要: Abstract The widespread use of PbTe nanocomposites requires knowledge regarding the composition their grain boundaries. Cathodoluminescence (CL), TOF-SIMS and Rutherford backscattering spectroscopy (RBS) were used to explore surface layers formed via thermal, electrochemical, wet chemical oxidation lead telluride. Surface obtained by these methods contained components with different degrees oxidation. RBS CL results show that thermal anodic produced ternary PbTeO3 Pb2TeO4 oxides, respectively. For oxide we observed a substantially lower concentration oxygen described PbO1−xTeO2−x, significant amount non-oxidized ions detected SIMS, low stability under electron beam radiation. Thus, is likely mixture binary suboxides.
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