Defect formation in C60 molecules under irradiations with electrons and γ-ray

Naofumi Sakaguchi, Hiroaki Abe, Yoshio Katano, Takashi Onitsuka, Naoto Sekimura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Defect formation, polymerization and resulting amorphization in C 60 under irradiations with electrons and γ-ray were studied by micro-Raman spectroscopy. In the case of electron irradiation, amorphization was induced through accumulation of defects and/or polymerization. Under the electron irradiation above 150 keV, the effect of atomic displacement was evident for amorphization. On the other hand, below 150 keV, the electronic excitation induces amorphization through polymerization. In the case of γ-ray irradiation, polymerization was mainly introduced within the experimental conditions. Although the amorphization was not detected under γ-ray irradiation, the result of Raman spectroscopy indicated that bond opening in intramolecular C-C bondings partially occured implying the preservation of its spherical shape.

Original languageEnglish
Pages (from-to)218-222
Number of pages5
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Issue number2
Publication statusPublished - 2007 Feb


  • Amorphization
  • Defect
  • Electron irradiation
  • Fullerene
  • Polymerization
  • γ-ray irradiation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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