Growth mechanism and morphology of semiconducting FeSi2films
作者:
Charalabos A. Dimitriadis,
Jurgen H. Werner,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 68,
issue 1
页码: 93-96
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.347159
出版商: AIP
数据来源: AIP
摘要:
Semiconducting &bgr;‐FeSi2films grown on (100)‐oriented Si and on (11¯02)‐sapphire substrates are investigated by x‐ray diffraction, Nomarski optical microscopy, stress, and surface roughness measurements. As a result of an exothermic, nucleation controlled reaction, we observe a characteristic ring‐shaped surface pattern of the silicide. Surface roughness and stress in &bgr;‐FeSi2are less pronounced for films grown at lower temperatures and cooling rates. Sapphire substrates result in smoother surfaces than Si due to the match of the thermal expansion coefficient of sapphire to the silicides.
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