Towards spintronics: superparamagnetism of nanoparticles in carbon nanotubes

Author

Konchits, Andriy A. ; Motsnyi, Fedir V. ; Terranova, Maria-Letizia

Author_Institution

Inst. of Semicond. Phys., Nat. Acad. of Sci. of Ukraine, Kyiv, Ukraine

Volume

2

fYear

2005

fDate

12-17 Sept. 2005

Firstpage

48

Abstract

For the first time the anomaly temperature dependence of the anisotropy field H_A in carbon single-walled nanotubes (SWNTs) with magnetic nanoclusters was observed. It is shown that the reason of this phenomenon can be caused by a competition between dipolar interaction and anisotropy. It is found that the assembly of Ni nanoparticles shows the crossover to a collective magnetic ordering both initial and diluted SWNTs at the temperatures smaller than about 50 K.

Keywords

carbon nanotubes; magnetic anisotropy; magnetic resonance; magnetoelectronics; nanoparticles; nickel; superparamagnetism; C; Ni; Ni nanoparticles; anisotropy field; anomaly temperature dependence; carbon nanotubes; carbon single-walled nanotubes; collective magnetic ordering; dipolar interaction; magnetic nanoclusters; magnetic resonance absorption; nanoparticles; spintronics; superparamagnetism; Absorption; Carbon nanotubes; Magnetic anisotropy; Magnetic resonance; Magnetic separation; Magnetoelectronics; Material storage; Nanoparticles; Perpendicular magnetic anisotropy; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Optoelectronics and Lasers, 2005. Proceedings of CAOL 2005. Second International Conference on

Print_ISBN

0-7803-9130-6

Type

conf

DOI

10.1109/CAOL.2005.1553914

Filename

1553914