Title :
Magnetic properties of nanocomposites containing Fe-Ni or Fe dispersed in a Mn-Zn ferrite matrix
Author :
Moulin, Gun-Yong ; Champion, Yannick ; Varga, Lajos Karoly ; Grenèche, Jean-Marc ; Mazaleyrat, Frédéric
Author_Institution :
Systemes et Applications pour les Technol. de l´´Inf. et de l´´Energie, ENS Cachan, France
fDate :
9/1/2002 12:00:00 AM
Abstract :
Composites have been prepared from Mn-Zn and Fe or Fe25Ni75 nanostructured powders, by melting in a planetary mill, compaction, and subsequent annealing. A solid state oxido-reduction reaction between iron and ferrite degrades the magnetic properties. On the other hand, Permalloy, which is more resistant to this reaction, results in soft magnetic nanocomposites which possess a magnetization higher than those of good ferrites.
Keywords :
Permalloy; annealing; composite materials; ferrites; iron; magnetic particles; magnetisation; manganese compounds; nanostructured materials; powder technology; reduction (chemical); soft magnetic materials; zinc compounds; Fe; Fe25Ni75; Fe25Ni75 nanostructured powders; Mn-Zn ferrite matrix; Permalloy; annealing; compaction; magnetic properties; magnetization; melting; nanocomposites; planetary mill; soft magnetic nanocomposites; solid state oxido-reduction reaction; Annealing; Compaction; Degradation; Ferrites; Iron; Magnetic properties; Milling machines; Nanocomposites; Powders; Solid state circuits;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802120
