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Browse Journals & Magazines > Applied Physics Letters ...> Volume:79 Issue:6 Help

Partitioning behavior and the effect of Co on the Curie temperature of nanocomposite PrFeCoB hard magnetic alloys

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5 Author(s)
Zhang, Y. ; Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, United Kingdom ; Warren, P.J. ; Cerezo, A. ; Harland, C.L.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1388879 

The microstructure and phase chemistry of melt-spun nanocomposite Pr9.7Fe76.6Co7.8B5.9 and Pr9.2Fe69.4Co15.4B6.0 ribbons have been studied using three-dimensional atom probe (3DAP) and transmission electron microscopy. The microstructure of these alloys consists of two phases, bcc α-Fe–Co and tetragonal Pr2(FeCo)14B. Practically all of the B and Pr atoms are rejected from the α-Fe–Co phase and are concentrated into the 2/14/1 hard magnetic phase. However, no significant difference of Co concentration between the two phases is observed. From the measured Co concentration in the 2/14/1 phase, it is explained why the effect of Co content on Curie temperature (Tc) is greater in the nanocomposite alloys than in single phase alloys. Predictions of Tc for the nanocomposite alloys based on the 3DAP composition data show excellent agreement with experimental measurements. © 2001 American Institute of Physics.

Published in:
Applied Physics Letters  (Volume:79 ,  Issue: 6 )

Date of Publication: Aug 2001

Page(s):
797 - 799
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.1388879
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Aug 2001

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