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THE STRUCTURAL CHANGES OF Au-Ge-Ni FILMS DURING HEATING

Luo Sui-chu Qin Da-cheng Wu Zi-qin

THE STRUCTURAL CHANGES OF Au-Ge-Ni FILMS DURING HEATING

Luo Sui-chu, Qin Da-cheng, Wu Zi-qin
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  • Received Date:  26 February 1982
  • Published Online:  05 May 1982

THE STRUCTURAL CHANGES OF Au-Ge-Ni FILMS DURING HEATING

  • 1. (1)北京大学物理系; (2)北京师范学院物理系

Abstract: The structural changes and the morphology of the evaporated Au-11.4 wt%Ge-4.8 wt%Ni films during heating have been studied by TEM. The structure of the as-evaporated film is a supersaturated Au solid solution and after more than 10 minutes anealling above 300℃ the film decomposes into Au solid solution and NiGe compound. In-situ observations in the heating stage of HVEM have revealed that the NiGe grains with size near 2000 A are dissolved into the Au solid solution in 2 seconds during heating to about 500℃. The remaining NiGe grains in the film prevent the balling process of the Au solid solution films occuring above 500℃.

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