Explosive crystallization in the course of formation of Se/Ag nanosize film structure

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• 作者：V. Ya. Kogai
• 刊名：Technical Physics Letters
• 出版年：2014
• 出版时间：August 2014
• 年：2014
• 卷：40
• 期：8
• 页码：636-639
• 全文大小：192 KB
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• 作者单位：V. Ya. Kogai (1)
  
  1. Institute of Mechanics, Ural Branch, Russian Academy of Sciences, Izhevsk, 426067, Russia
  
• ISSN：1090-6533

文摘

Results of an experimental study of explosive crystallization appearing in the process of formation of a Se/Ag nanosize film structure are presented. It is shown that explosive crystallization appears in a wide range of Se film thicknesses (70-80 nm) and occurs during a narrow time interval (2.00-.52 s). The cooperative effect of the thermal energy of the phase transformation of Ag2Se and the energy of elastic stress in the amorphous Se film leads to development of an explosive crystallization. It was found that, depending on the relative thicknesses of Se and Ag films, orthorhombic Ag2Se with crystal-lattice constants a = 4.333 ?, b = 7.062 ?, and c = 7.764 ? and hexagonal Se (a = 4.3552 ? and c = 4.9495 ?) are formed in the reaction products upon the explosive crystallization.