[17a-P01-1~66] 17 Nanocarbon and Two-Dimensional Materials (Poster)

[17a-P01-5] Effect of Platinum Addition on Magnetic Properties of Iron-filled Carbon Nanotubes Grown on Nickel Catalyst Films

〇Yuki Yano¹, Yuji Hujiwara¹, Sato Hideki¹ (1.Mie Univ.)

Keywords:

Iron-filled carbon nanotubes,Ferromagnetic materials,Coercivity

Iron-filled carbon nanotubes (Fe@CNTs), in which iron (Fe) nanowires fill the cavities of carbon nanotubes (CNTs), are promising as hard ferromagnetic materials. In this study, platinum (Pt)/nickel (Ni) multilayered thin films were used as catalyst thin films for the growth of Fe@CNTs. Fe@CNTs grown on a substrate with a catalyst film thickness ratio of Pt/Ni = 0.2 nm/1.0 nm exhibited a maximum coercivity of 2.19 kOe, which was higher coercivity than those grown without using Pt. This suggests that Pt influences the crystal magnetic anisotropy of the iron nanowires in Fe@CNTs.