Accession Number:

ADP012192

Title:

Grain Size Dependent Magnetic Properties of Nanocrystalline Sm2Co17/Cu

Descriptive Note:

Corporate Author:

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE THIAIS (FRANCE) LAB DE CHIMIE METALLURGIQUE DES TERRES RARES

Report Date:

2001-11-01

Pagination or Media Count:

6.0

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.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE