skip to main content

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

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.
Authors:
; ; ;  [1]
  1. Department of Physics, Morgan State University, Baltimore, Maryland 21251 (United States)
Publication Date:
OSTI Identifier:
22402842
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 14; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; CARBON NANOTUBES; COMPARATIVE EVALUATIONS; DEPOSITION; IRON; MAGNESIUM OXIDES; MAGNETIC FIELDS; MAGNETIC PROPERTIES; NANOWIRES; SUBSTRATES; TEMPERATURE DEPENDENCE; THIN FILMS; TWO-DIMENSIONAL SYSTEMS; X-RAY DIFFRACTION