Novel properties of single-walled carbon nanotubes with encapsulated magnetic atoms

Yongfeng Li, Toshiro Kaneko, Tomoyuki Ogawa, Migaku Takahashi, Rikizo Hatakeyama

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


This paper focuses on the study of single-walled carbon nanotubes (SWNTs) filled with magnetic Fe nanoparticles. The magnetic properties of Fe-filled SWNTs are measured at various temperatures, and the results indicate that they exhibit a ferromagnetic characteristic at room temperature and superparamagnetic properties at low temperatures. In addition, the electrical transport properties of Fe-filled SWNTs are examined, and the results demonstrate that their electronic properties depend on the filling level of the encapsulated Fe particles. It is found that Fe-filled SWNTs can exhibit high-performance unipolar n-type semiconducting characteristics at high filling levels and p-n junction diode behavior at low filling levels.

Original languageEnglish
Pages (from-to)2048-2055
Number of pages8
JournalJapanese journal of applied physics
Issue number4 PART 1
Publication statusPublished - 2008 Apr 18


  • Carbon nanotubes
  • Electronic property
  • Encapsulation
  • Magnetic property

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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