Effect of Magnetostriction on Remanent Magnetization.

Abstract

Magnetostriction effects of remanent magnetization are examined in a phenomenological model that is used to design a high magnetization polycrystalline spinel ferrite with excellent square hysteresis loop properties. Isotropic magnetostriction is compensated by substituting Mn(3+) ions for 0.2 Fe(3+) ions per formula unit of Ni.65Zn.35Fe2O4 host material. As predicted by theory, the magnetostriction reduction dramatically increases the remanent magnetization and removes most of its external stress sensitivity. The resulting remanent magnetization, which approaches 4000 G, represents an increase of more than a factor of 2 over that of the host composition, with no significant deterioration in other magnetic nd dielectric properties. The remanence ratio improvement is in general accord with estimates predicted by the theoretical model. Keywords: Remanent magnetization increase; Magnetostriction compensation; Stress demagnetization; Square hysteresis loop NiZn ferrite; High magnetization/low coercivity ferrite.

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Document Details

Document Type
Technical Report
Publication Date
Dec 05, 1985
Accession Number
ADA165450

Entities

People

  • Gerald F. Dionne

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Anisotropy
  • Ballistic Missiles
  • Compensation
  • Crystal Lattices
  • Demagnetization
  • Dielectric Permittivity
  • Dielectric Properties
  • Domain Walls
  • Equations
  • Ferrites
  • Hysteresis
  • Magnetic Fields
  • Magnetization
  • Magnetostriction
  • Materials
  • Polycrystals
  • Sensitivity

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics