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

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

doi:10.1143/JJAP.47.2048

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

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

ENG - Electronic Engineering

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	2048-2055
Number of pages	8
Journal	Japanese journal of applied physics
Volume	47
Issue number	4 PART 1
DOIs	https://doi.org/10.1143/JJAP.47.2048
Publication status	Published - 2008 Apr 18

Keywords

Carbon nanotubes
Electronic property
Encapsulation
Magnetic property

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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abstract = "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.",

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AU - Kaneko, Toshiro

AU - Ogawa, Tomoyuki

AU - Takahashi, Migaku

AU - Hatakeyama, Rikizo

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N2 - 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.

AB - 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.

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KW - Encapsulation

KW - Magnetic property

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