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Grain Size Dependent Magnetic Properties of Nanocrystalline Sm [BE]Co [BD][BJ]/Cu

Published online by Cambridge University Press:  15 March 2011

L. Bessais ,
C. Djéga-Mariadassou ,
J. Zhang ,
V. Lalanne  and
A. Percheron-Guégan
L. Bessais
Affiliation:
LCMTR, UPR209, CNRS, 2/8 rue Henri Dunant, B.P. 28 F-94320 Thiais, France IUFM de Créteil, F-94861 Bonneuil sur Marne, France
C. Djéga-Mariadassou
Affiliation:
LCMTR, UPR209, CNRS, 2/8 rue Henri Dunant, B.P. 28 F-94320 Thiais, France
J. Zhang
Affiliation:
LCMTR, UPR209, CNRS, 2/8 rue Henri Dunant, B.P. 28 F-94320 Thiais, France
V. Lalanne
Affiliation:
LCMTR, UPR209, CNRS, 2/8 rue Henri Dunant, B.P. 28 F-94320 Thiais, France
A. Percheron-Guégan
Affiliation:
LCMTR, UPR209, CNRS, 2/8 rue Henri Dunant, B.P. 28 F-94320 Thiais, France
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Abstract

The evolution of both micro structural and magnetic properties of the Sm[BE]Co[BD][BJ] Cu powder, is studied as 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 Sm[BE]Co[BD][BJ] isolated by non-magnetic metal Cu.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 703: Symposia U/V – Nanophase and Nanocomposite Materials IV , 2001 , V3.16
Copyright
Copyright © Materials Research Society 2002

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References

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