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Title: Low-energy D{sup +} and H{sup +} ion irradiation effects on highly oriented pyrolytic graphite

We have investigated the low-energy (100 eV) D{sup +} and H{sup +} ion irradiation effects on the structural and chemical properties of highly oriented pyrolytic graphite (HOPG). Structural disorder due to the ion irradiation was identified by the Raman spectroscopy, the D{sup +} irradiation giving rise to greater structural disorder than the H{sup +} irradiation. Only sp{sup 2} bonding was identified in the X-ray photoemission spectroscopy of the D{sup +}-irradiated HOPG, indicating no change in the surface chemical structure. The H{sup +} irradiation, on the other hand, gave rise to sp{sup 3} bonding and π−π{sup *} transition, the sp{sup 3} bonding increasing with increasing irradiation dose. It is thus shown that the chemical properties of the HOPG surface may be sensitively modified by the low-energy H{sup +} ion irradiation, but not by the low-energy D{sup +} ion irradiation.
Authors:
; ; ; ; ;  [1] ; ;  [2] ; ;  [3]
  1. Department of Physics and Institute for Nano Science, Korea University, Seoul 136-713 (Korea, Republic of)
  2. Department of Nuclear Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)
  3. Department of Applied Physics, Dankook University, Yongin 448-701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22217827
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 114; Journal Issue: 21; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AUGMENTATION; BONDING; CHEMICAL BONDS; CHEMICAL PROPERTIES; DEUTERIUM IONS; EV RANGE; GRAPHITE; HYDROGEN IONS 1 PLUS; ION BEAMS; IRRADIATION; PHOTOEMISSION; RADIATION DOSES; RAMAN SPECTRA; RAMAN SPECTROSCOPY; SURFACES; X RADIATION; X-RAY PHOTOELECTRON SPECTROSCOPY