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Nanowires of Fe/multi-walled carbon nanotubes and nanometric thin films of Fe/MgO

journal contribution
posted on 2023-11-02, 05:09 authored by Alexander Newman, Suman Khatiwada, Suman Neupane, Dereje Seifu
We observed that nanowires of Fe grown in the lumens of multi-walled carbon nanotubes required four times higher magnetic field strength to reach saturation compared to planar nanometric thin films of Fe on MgO(100). Nanowires of Fe and nanometric thin films of Fe both exhibited two fold magnetic symmetries. Structural and magnetic properties of 1-dimensional nanowires and 2-dimensional nanometric films were studied by several magnetometery techniques. The θ-2θ x-ray diffraction measurements showed that a (200) peak of Fe appeared on thin film samples deposited at higher substrate temperatures. In these samples prepared at higher temperatures, lower coercive field and highly pronounced two-fold magnetic symmetry were observed. Our results show that maximum magnetocrystalline anisotropy occurred for sample deposited at 100 °C and it decreased at higher deposition temperatures.

History

Journal

JOURNAL OF APPLIED PHYSICS

Volume

117

Article number

ARTN 144302

ISSN

0021-8979

eISSN

1089-7550

Language

English

Publication classification

C1.1 Refereed article in a scholarly journal

Issue

14

Publisher

AMER INST PHYSICS