Nanocomposite with Non-Spherical Granules - Logarithmic Field Dependence of Giant Magnetoresistance

Abstract

Magnetoresistance of the nanocomposite Fe(x)(SiO2)(1-x) (x = 0.6) at high enough magnetic field is logarithmic function of the magnetic field. Such a dependence does not fall into the known theory of giant magnetoresistance of ferromagnetic nanocomposites. This paper examines the giant magnetoresistance of such a system in terms of a simple model where the non-ordinary quasi-logarithmic magnetic field dependence of nanocomposite magnetoresistance is related to the non-spherical granules' distribution over their shapes.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 2001
Accession Number
ADP012305

Entities

People

  • B. Raquet
  • E. Meilikhov

Tags

DTIC Thesaurus Topics

  • Dielectric Permittivity
  • Dielectrics
  • Distribution Functions
  • Electron Transitions
  • Electrons
  • Low Temperature
  • Magnetic Anisotropy
  • Magnetic Fields
  • Magnetic Moments
  • Magnetization
  • Magnetoresistance
  • Materials
  • Nanocomposites
  • Optical Materials
  • Resistance
  • Technical Information Centers
  • Transitions

Fields of Study

  • Physics

Readers

  • Environmental Engineering.
  • Materials Science and Engineering.