期刊
APPLIED PHYSICS LETTERS
卷 103, 期 16, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4825265
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- Italian Institute of Technology (IIT)
We report the outcome of atomic force microscopy local anodic oxidation experiments on 6H-SiC in air. Oxide thickness can be easily tuned by varying applied voltage and pulse duration. The height and the aspect ratio of single dots produced by single DC pulses are remarkably higher than what was reported previously, with self limiting heights exceeding 100 nm. We propose that the diminished density and the change in chemical composition of the oxide grown on SiC with respect to oxide grown under similar condition on Si cause a drop in the activation energy of oxanions diffusion within the newly formed oxide layer. (C) 2013 AIP Publishing LLC.
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