Effects of Depolarization on the Microwave Properties of Composites

Abstract

Mathematical relationship for the dielectric and permeability constants of single particle and composite materials are being formulated and tested in experimental conditions. For dilute concentrations of particles imbedded in binder materials reasonable agreement is found between measured and calculated values of the constants. The theoretical formulation is based upon a two-parameter theory (Magnetization and magnetic anisotropy field). Microwave properties of composite materials are of interest since it is possible to control or design the constituents of a composite in order to obtain a desireable property of the composite. In this report we concentrate our attention on the effect of particle shape on the microwave properties of a composite. In particular we consider metallic as well as insulating particles distributed randomly in known binders.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1991
Accession Number
ADA236349

Entities

People

  • C. Vittoria

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Agreements
  • Air Force
  • Anisotropy
  • Composite Materials
  • Depolarization
  • Dielectric Permittivity
  • Dielectrics
  • Electromagnetic Fields
  • Frequency
  • Magnetic Anisotropy
  • Magnetic Properties
  • Magnetization
  • Materials
  • Materials Laboratories
  • Microwaves
  • Particles
  • Permeability

Readers

  • Aerosol Science/Aerosol Physics
  • Nanocomposite Materials Science
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Microelectronics