Structural Modification of Nanodiamond Induced by Ion Irradiation

  • 석재권 (한국과학기술연구원 특성분석센터) ;
  • 임원철 (한국과학기술연구원 특성분석센터) ;
  • 채근화 (한국과학기술연구원 특성분석센터) ;
  • 송종한 (한국과학기술연구원 특성분석센터) ;
  • 이재용 (연세대학교 물리학과)
  • Published : 2014.02.10

Abstract

Nanodiamond (ND) is composed of inner diamond core and outer graphite shell. The size of ND used in this study was about 5 nm. The ND solution was dropped on silicon substrate and dried in air. Dried ND sample was purified by using annealing method in air. Then, 40 keV Fe ion was irradiated into the sample. The dose was varied from $1{\times}10^{14}$ to $1{\times}10^{16}ions/cm^2$. The post annealing was performed at 1073 K in the vacuum to recover diamond structure. The annealing at 873 K in air was performed to remove the outer graphite shell. The structure of ND was confirmed by X-ray diffraction (XRD) and Raman spectroscopy. We will present the detailed data and results in the conference.

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