Structural Properties of the Diamond Nucleation Layer on Iridium Analyzed by Laterally Resolved X-Ray Absorption Spectroscopy

概要

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The complex structure of the diamond nucleation layer on iridium has been studied by X-ray absorption near edge structure (XANES) in combination with X-ray photoemission electron microscopy (X-PEEM). In contrast to all other substrate materials, on iridium the diamond nuclei formed by the bias enhanced nucleation (BEN) procedure gather in islands ("domains") with micron-size lateral dimensions. Laterally resolved XANES spectra of the carbon-K absorption edge clearly show the difference in carbon bonding structure outside and inside the domain area. A positive feedback mechanism for the nucleation and lateral crystal growth are two alternative concepts which can explain the domain formation.
Japan Society of Applied Physicsの論文
2006-09-25