Effects of Annealing on the Magnetic Properties of Cold-Worked Nickel- Zinc Ferrite

Abstract

Magnetic property changes in nickel-zinc ferrite toroids caused by polishing are shown to be recoverable during annealing at temperatures in the range of 500 to 1000C. Recovery is shown to be an athermal process, leading to the speculation that internal strains may be due to coherency effects between stacking faults and the parent ferrite lattice, and that stress-relief under those conditions may not be independent of the presence of a second phase. Some consideration is given to the possibility of using recovery effects to indicate maximum temperature exposure in some type of sensor, but it is concluded that a great deal more work would be needed to develop such an instrument.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1972
Accession Number
AD0747251

Entities

People

  • A. Contolatis
  • John R. Kench

Organizations

  • Honeywell International, Inc.

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Annealing
  • Coercivity
  • Dispersion Hardening
  • Fabrication
  • Ferrites
  • Magnetic Properties
  • Magnetization
  • Materials
  • Measurement
  • Melting Point
  • Military Research
  • Phase
  • Phase Transformations
  • Polishing
  • Recovery
  • Residual Stress
  • Residuals

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Microwave Engineering.
  • Powder metallurgy of Titanium alloys.