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Synthesis and Characterization of Fe-Co Nanocrystalline Alloys

Published online by Cambridge University Press:  15 March 2011

Mohammad Mujahid  and
Jie Zhu
Mohammad Mujahid
Affiliation:
School of Materials Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
Jie Zhu
Affiliation:
School of Materials Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
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Abstract

Nanostructured alloys have great potential as soft magnetic materials. In particular, nanocrystalline Fe-Co based alloys are believed to be good candidates for imparting improved magnetic behavior in terms of higher permeability, lower coercivity, reduced hysteresis losses and higher Curie temperatures. In the present work, Fe-50at.%Co alloy powders have been prepared using mechanical alloying (MA) in a planetary ball mill under controlled environment. The particle size and morphology of MA powders was investigated using scanning electron microscopy. The crystal size and internal strain was measured using X-ray diffraction. It has been shown that the crystal size could be reduced down to less than 15 nm in these alloys. Finally, the influence of grain size and internal strain on the magnetic properties has been discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 821: Symposium P – Nanoscale Materials & Modeling-Relations Among Processing, Microstructure and Mechanical Properties , 2004 , P8.26
Copyright
Copyright © Materials Research Society 2004

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