Roughening of atomically flat diamond (111) surfaces by a hot HNO₃/H₂SO₄ solution

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• 作者：Norio Tokuda ; Hitoshi Umezawa ; Sung-Gi Ri ; Kikuo Yamabe ; Hideyo Okushi ; Satoshi Yamasaki
• 关键词：Surface ; Morphology ; Oxidation ; Etching
• 刊名：Diamond and Related Materials
• 出版年：2008
• 期刊代码：30_09259635
• 类别：ms
• 出版时间：April-May 2008
• 卷：17
• 期：4-5
• 页码：486-488
• 文件大小：314 K

摘要

A systematic investigation of the roughening of atomically flat diamond (111) surfaces by immersion in a hot mixture of HNO₃/H₂SO₄ acids was performed using atomic force microscopy. Before the immersion the diamond surfaces were atomically flat, with single bilayer steps and terraces; surface roughness increased after the immersion in the hot acid mixture. This result suggests that surface oxidation by the hot acid mixture etches the surface causing surface roughening.