RARE EARTH-MANGANESE ALLOYS, THEIR PREPARATION, CRYSTAL STRUCTURES, PHASE DIAGRAMS, AND MAGNETIC PROPERTIES

Abstract

By the amalgam process, which consists of a heat treatment of amalgams and yields mercury-free alloys and intermetallic compounds, rare earth metal (RE Y, La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Er)-manganese intermetallic compounds have been prepared. The lattice spacings and the structures of the compounds REMn2, RE6Mn23, and REMn12 were determined. The phase diagrams of the systems Gd-Mn, Dy-Mn, Ho-Mn, and Er-Mn are given. By magnetic measurements in the temperature range from 80 to 1500K the magnetization, susceptibility, and the Bohr-magneton numbers of these compounds are evaluated. The magnetic behavior of these compounds can be understood by a mutual interaction of different ferrimagnetic states.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1967
Accession Number
AD0654653

Entities

People

  • Franz Lihl
  • Hans R. Kirchmayr

Tags

DTIC Thesaurus Topics

  • Air Force
  • Alloys
  • Crystal Structure
  • Curie Temperature
  • Heat Treatment
  • Intermetallic Compounds
  • Magnetic Moments
  • Magnetic Phenomena
  • Magnetic Properties
  • Manganese
  • Materials
  • Materials Laboratories
  • Measurement
  • Neel Temperature
  • Phase Diagrams
  • Rare Earth Elements
  • Transition Metals

Fields of Study

  • Physics

Readers

  • Battery Technology and Engineering
  • Powder metallurgy of Titanium alloys.
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster