Ultra-fast synthesis of Bi2Te3−xSex based compounds with micro-nano composite structure at room temperature by reactive flash sintering
JOURNAL OF CRYSTAL GROWTH(2023)
摘要
•Bi2Te3−xSex was synthesized in 2 s at room temperature using Bi, Te and Se powders.•The synthesized Bi2Te3−xSex compound has micro-nano composite structure.•Local Joule heat and ultra-high self-heating rate are inferred for the synthesis.•Mechanism includes Joule heating, melting, reaction, nucleation and grain growth.
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关键词
A1. Crystal structure,Nucleation,Solid solutions,X-ray diffraction,A2. Growth from solutions,B1. Bismuth compounds
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