Research and Development of Rare Earth-Transition Metal Alloys as Permanent-Magnet Materials

Abstract

Mixed intermetallic phases of type R(2)(Co(1-x)Fe(x))17 with R=Ce, Pr, Nd, Sm, Y, and MM (Ce-rich mischmetal) are being studied as potential permanent magnet materials. Except for R=Nd, all show ranges of x in which the crystallographic c-axis is the easy axis of magnetization. During the present period, these ranges have been more precisely defined and quantitative measurements of the saturation magnetization and crystal anisotropy constants initiated. The composition dependence of selected metallurgical and magnetic properties of phases of the type Nd(1-x)R(x)Co5, where R=Ce, Pr, and Y, are under investigation. Peritectic melting temperatures, lattice constants, Curie temperatures, and saturation-magnetization measurements are reported. Single crystals of several of the mixed phases have been prepared and saturation magnetization and room-temperature anisotropy measurements on these have been initiated.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1972
Accession Number
AD0743992

Entities

People

  • Alden E. Ray
  • Karl J. Strnat

Organizations

  • University of Dayton

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alloys
  • Chemistry
  • Cobalt Alloys
  • Coercivity
  • Crystal Lattices
  • Crystal Structure
  • Curie Temperature
  • Magnetic Fields
  • Magnetic Materials
  • Magnetic Properties
  • Magnetic Transition Temperatures
  • Materials
  • Materials Laboratories
  • Rare Earth Alloys
  • Rare Earth Elements
  • Solid Solutions
  • Transition Metals

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Powder metallurgy of Titanium alloys.
  • Superconducting Magnet Technology