Micromagnetic Properties and Magnetization Reversal of Ni Nanoparticles Studied by Magnetic Force Microscopy

Abstract

Ni nanoparticles with sizes ranging from 40 to 400 nm formed by thermal annealing of thin film were investigated by atomic and magnetic force microscopy in situ in presence of applied nmgnetic field up to 300 Oe. By comparison of the corresponding experimental AFM and MFM images and computer simulated MFM images, the small particles with diameter below 100 nm were found to be in single domain state. The the direction of total magnetization of greater particles is defined by their shape anisotropy. The MFM image features and the magnetization reversal mechanism of such particles are explained in terms of a vortex magnetization.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1998
Accession Number
ADP012828

Entities

People

  • A. A. Bukharaev
  • B. F. Kukovitskii
  • D. V. Ovchinnikov
  • M. S. Kleiber
  • N. I. Nurgazizov

Organizations

  • Russian Academy of Sciences

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Anisotropy
  • Aspect Ratio
  • Computer Simulations
  • Computers
  • Contrast
  • Diameters
  • Films
  • Magnetic Fields
  • Magnetic Forces
  • Magnetic Moments
  • Magnetization
  • Measurement
  • Microscopy
  • Nanoparticles
  • Nanostructures
  • Particles
  • Simulations

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Superconducting Magnet Technology
  • Thin Film Deposition Science.

Technology Areas

  • Biotechnology