EXCHANGE COUPLING AND THE GRAIN-BOUNDARY IN MAGNETIC NANOCOMPOSITES

Authors
ODONNELL K RAO XL CULLEN JR COEY JMD
Citation
K. Odonnell et al., EXCHANGE COUPLING AND THE GRAIN-BOUNDARY IN MAGNETIC NANOCOMPOSITES, IEEE transactions on magnetics, 33(5), 1997, pp. 3886-3888
Citations number
7
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
33
Issue
5
Year of publication
1997
Part
2
Pages
3886 - 3888
Database
ISI
SICI code
0018-9464(1997)33:5<3886:ECATGI>2.0.ZU;2-9
Abstract
The grain boundary phase/material found to be present in two-phase mec hanically alloyed nanocomposites of Sm2Fe17N3/Fe and Nd2Fe14B/Fe was c haracterized using Mossbauer spectroscopy and magnetization measuremen ts. The fraction of iron in this third component is typically 10-15% i n Sm2Fe17N3/Fe and 4-5% in Nd2Fe14B/Fe nanocomposites. The influence o f the grain size of the nanocomposite and the grain boundary material on the susceptibility was studied and the results are discussed in ter ms of the model of Wang and Mills.