Temperature induced de-polymerization in TDAE-C60

T. Kambe, S. Garaj, L. Forró, M. Fujiwara, K. Oshima

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


The phase change due to the polymerization of the ferromagnetic tetrakis-dimethylamino-ethylene (TDAE)-C60 has been reconfirmed by applying pressures in situ up to Pc = 7 kbar in an ESR cavity. This transition is irreversible and the phase above Pc is stable even after releasing pressure. The pressure-dependent g-factor indicates the revival of the TDAE+ spins. Moreover, the ferromagnetism disappears simultaneously at Pc. The de-polymerization of the polymerized (pressure-released) crystal has been confirmed for the first time by the high-temperature ESR study. This transition is also irreversible and the polymer phase is stable up to 470 K. The de-polymerized phase is considered to be the original ferromagnetic one.

Original languageEnglish
Pages (from-to)697-698
Number of pages2
JournalSynthetic Metals
Publication statusPublished - Mar 13 2003
EventISCOM 2001 - Rusutsu, Hokkaido, Japan
Duration: Sept 10 2001Sept 14 2001


  • De-polymerization
  • Ferromagnetic
  • High-pressure ESR
  • Polymer
  • TDAE-C

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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