The Effect of Size Distribution on the Switching Field Distribution of Co/Pd Multilayered Nanostructure Arrays

Abstract

We use Ion Beam Proximity Lithography (IBPL) to produce 4mm x 4mm arrays of 220 nm dots in perpendicularly-oriented Co/Pd multilayered media. IBPL is used to reduce the size distribution sigmaD of the arrays, and subsequently He+ ion irradiation is used to reduce their anisotropy. The Switching Field Distribution sigma(Hcr)/H(Cr) is measured for each sample before and after irradiation, and a linear relationship is experimentally found between sigma(Hcr)/H(Cr) and sigmaD. We argue that the slope of the line is due to the self-demagnetization effect of individual dots (and therefore, it is not strictly a line) and that the intercept of the line is inversely proportional to the permeability of the nanostructured material.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 2008
Accession Number
ADA496838

Entities

People

  • Darren Smith
  • Dmitri Litvinov
  • James Rantschler
  • Paul Ruchhoeft
  • Sakhrat Khizroev

Organizations

  • University of Houston

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Anisotropy
  • Base Pressure
  • Data Storage Systems
  • Demagnetization
  • Electron Beams
  • Fabrication
  • Gaussian Distributions
  • Ion Beams
  • Ions
  • Magnetic Materials
  • Materials
  • Measurement
  • Nanomaterials
  • Nanostructures
  • Switching
  • Universities

Fields of Study

  • Physics

Readers

  • Nanofabrication and Microfabrication.
  • Regression Analysis.

Technology Areas

  • Microelectronics