Title

Diameter dependent magnetic and electronic properties of single-walled carbon nanotubes with Fe nanowires

College

College of Science

Department/Unit

Physics

Document Type

Article

Source Title

Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers

Volume

44

Issue

2

Publication Date

2-1-2005

Abstract

We investigate the electronic and magnetic properties of single-walled carbon nanotubes (SWNTs) filled with Fe nanowires, based on the spin-polarized density functional theory. We find that in the stable structure, the Fe-filled (3, 3) and (5, 0) SWNTs exhibit semiconducting properties, and the magnetic moment of Fe nanowires inside disappears. On the other hand, the Fe-filled (4, 4), (5, 5), (6, 6) and (6, 0) SWNTs, having larger radii, are metallic and exhibit ferromagnetic properties. The corresponding magnetic moment increases with increasing nanotube diameter. © 2005 The Japan Society of Applied Physics.

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Digitial Object Identifier (DOI)

10.1143/JJAP.44.882

Disciplines

Physics

Keywords

Nanowires—Magnetic properties; Carbon nanotubes; Iron; Spintronics; Density functionals

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