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Elaboration, structure, microstructure and magnetic properties of soft Fe80Ni20 nanomaterials elaborated by high energy ball milling

Published online by Cambridge University Press:  24 March 2014

Abderrahim Guittoum ,
Sabrina Lamrani ,
Abdelkader Bourzami ,
Messaoud Hemmous ,
Nassim Souami  and
Wolfgang Weber
Abderrahim Guittoum*
Affiliation:
Nuclear Research Centre of Algiers, 2 Bd Frantz Fanon, BP 399, Alger-Gare, Algiers, Algeria
Sabrina Lamrani
Affiliation:
Mouloud Mammeri University of Tizi Ouzou, 15000 Tizi-Ouzou, Algeria
Abdelkader Bourzami
Affiliation:
Faculty of Sciences, LESIMS, Ferhat Abbas University, 19000 Setif, Algeria
Messaoud Hemmous
Affiliation:
Nuclear Research Centre of Algiers, 2 Bd Frantz Fanon, BP 399, Alger-Gare, Algiers, Algeria
Nassim Souami
Affiliation:
Nuclear Research Centre of Algiers, 2 Bd Frantz Fanon, BP 399, Alger-Gare, Algiers, Algeria
Wolfgang Weber
Affiliation:
Institut de Physique et Chimie des Matériaux de Strasbourg, UDS-CNRS, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
*
ae-mail: [email protected]
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Abstract

The aim of the present work is to elaborate nanocrystalline soft Fe80Ni20 powders and to study the relationship between their magnetic behaviour and structural changes after different milling times. A series of Fe80Ni20 powders were elaborated by the mechanical alloying process for milling time ranging from 3 to 25 h. X-ray diffraction results showed that nickel dissolved in the iron lattice and formed a complete cubic centered (bcc) solid solution after 10 h of milling time. As the milling time increases from 0 to 25 h, the lattice parameter increases from 0.28610 nm for pure Fe to 0.28670 nm, the grain size decreases from 75 to 11 nm, while the mean level of strain increases from 0.09% to 0.5%. It is found that the saturation magnetization increases while the coercivity decreases when the milling time increases. The increase of saturation magnetization and decrease of coercivity are attributed to the decrease of the grain size with milling time. We have shown that nanocrystalline Fe80Ni20 powders exhibit a soft magnetic behaviour.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 65 , Issue 3 , March 2014 , 30401
Copyright
© EDP Sciences, 2014

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