Coherent Dynamics of Magnetic Particles

Abstract

This project encompassed experimental and theoretical research aimed at understanding the underlying physics of dynamically driven magnetization reversal in magnetic nanoparticles. Nanoparticle arrays comprising circular, elliptical and cylindrical dots were patterned by e-beam lithography. The samples were characterized by AEM, MFM and dc magnetization measurements, and their dynamic properties determined by ferromagnetic resonance (FMR) measurements. Detailed numerical solutions of the micromagnetic equations of motion have explored the origin of the peaks observed in the FMR spectrum of the ferromagnetic arrays.

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Document Details

Document Type
Technical Report
Publication Date
Dec 17, 2001
Accession Number
ADA398315

Entities

People

  • Venkat Chandrasekhar

Organizations

  • Northwestern University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Electron Beam Lithography
  • Equations
  • Equations Of Motion
  • Fabrication
  • Ferromagnetic Resonance
  • Lithography
  • Magnetic Fields
  • Magnetic Nanoparticles
  • Magnetization
  • Materials
  • Measurement
  • Nanoparticles
  • Particles
  • Physics
  • Resonance
  • Spectra
  • Spin Waves

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Nanoscale Plasmonic Nanotechnology
  • Structural Dynamics.

Technology Areas

  • Biotechnology