Grain Size Dependent Magnetic Properties of Nanocrystalline Sm2Co17/Cu

Abstract

The evolution of both micro structural and magnetic properties of the Sm2Co17-Cu powder, is studied us a function of soft co-milling time. The average grain size in the range 20 - 50 nm was determined by transmission electron microscopy coupled with x-ray diffraction using the Rietveld method. The particle shape and chemical distribution were investigated by elemental mapping, using wavelength dispersive x-ray analysis with electron microprobe analysis. The coercivity evolution shows that an optimum value of 6 kOe is obtained after 5 h co-milling. The microstructure analysis indicates that both materials are well mixed in nanometer scale. This technique appears as a potential route to synthesize nanocrystalline Sm2Co17 isolated by non-magnetic metal Cu.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2001
Accession Number
ADP012192

Entities

People

  • A. Percheron-guegan
  • C. Djega-mariadassou
  • Jinlun Zhang
  • L. Bessais
  • V. Lalanne

Organizations

  • National Center for Scientific Research

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Coercivity
  • Crystal Structure
  • Diffraction
  • Electron Microscopy
  • Grain Size
  • High Density
  • Magnetic Properties
  • Materials
  • Microscopes
  • Nanocomposites
  • Nanoparticles
  • Particle Size
  • Particles
  • Scanning Electron Microscopy
  • Transition Metals
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science
  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Nanofabrication and Microfabrication.
  • Superconducting Magnet Technology

Technology Areas

  • Microelectronics