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

• Main Authors: Kisaku, Masanori, Rahman, Mahmudur, Kishi, Tomoya, Matsunaka, Daisuke, Roman, Tanglaw Abat, Diño, Wilson Agerico, Nakanishi, Hiroshi, Kasai, Hideaki
• Format: text
• Published: Animo Repository 2005
• Subjects: Nanowires—Magnetic properties; Carbon nanotubes; Iron; Spintronics; Density functionals; Physics
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/4004
• Institution: De La Salle University

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.