(The relationship between microstructure and magnetic properties in high-energy permanent magnets characterized by polytwinned structures) Metadata

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Title

  • Main Title (The relationship between microstructure and magnetic properties in high-energy permanent magnets characterized by polytwinned structures)

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: DOE; USDOE, Washington, DC (United States)

Publisher

  • Name: Pittsburgh Univ., PA (United States)
    Place of Publication: United States

Date

  • Creation: 1992-01-01

Language

  • English

Description

  • Content Description: This report summarizes the results of a study of the relationship between microstructure and magnetic properties in a unique genre of ferromagnetic material characterized by a polysynthetically twinned structure which arises during solid state transformation. These results stem from the work over a period of approximately 27 months of a nominal 3 year grant period. The report also contains a proposal to extend the research project for an additional 3 years. The polytwinned structures produce an inhomogeneous magnetic medium in which the easy axis of magnetization varies quasi-periodically giving rise to special domain configurations which are expected to markedly influence the mechanism of magnetization reversal and hysteresis behavior of these materials in bulk or thin films. The extraordinary permanent magnet properties exhibited by the well-known Co-Pt alloys as well as the Fe-Pt and Fe-Pd systems near the equiatomic composition derive from the formation of a polytwinned microstructure.
  • Physical Description: Pages: (49 p)

Subject

  • Keyword: Alloys
  • Keyword: Coherent Scattering
  • Keyword: Ferromagnetic Materials
  • Keyword: Platinum Alloys
  • Keyword: Palladium Alloys
  • Keyword: Permanent Magnets
  • Keyword: Platinum Metal Alloys
  • Keyword: Cobalt Alloys
  • Keyword: Binary Alloy Systems
  • Keyword: Crystal Structure
  • Keyword: Diffraction
  • Keyword: Microscopy
  • Keyword: Materials
  • Keyword: Physical Properties
  • Keyword: Magnetic Materials
  • Keyword: Phase Diagrams
  • Keyword: Iron Alloys
  • Keyword: Magnetic Properties
  • Keyword: X-Ray Diffraction
  • Keyword: Microstructure
  • Keyword: Magnets
  • Keyword: Alloy Systems
  • STI Subject Categories: 36 Materials Science
  • Keyword: Scattering 360104* -- Metals & Alloys-- Physical Properties
  • STI Subject Categories: 360102 -- Metals & Alloys-- Structure & Phase Studies
  • Keyword: Diagrams

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE92015198
  • Report No.: DOE/ER/45390-3
  • Grant Number: FG02-89ER45390
  • DOI: 10.2172/5133101
  • Office of Scientific & Technical Information Report Number: 5133101
  • Archival Resource Key: ark:/67531/metadc1055669

Note

  • Display Note: OSTI; NTIS; GPO Dep.