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Browse Journals & Magazines > Journal of Applied Physics ...> Volume:109 Issue:7 Help

Hard/graded exchange spring composite media based on FePt

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7 Author(s)
Alexandrakis, V. ; IMS, NCSR Demokritos, Aghia Paraskevi, Attikis, Athens 15310, Greece ; Speliotis, Th. ; Manios, E. ; Niarchos, D.
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Hard-FePt(L10)/graded-FePt(L10 to A1) exchange spring composite media with perpendicular magnetic anisotropy have been studied. Changing the deposition temperature affects the structural transformation of FePt from cubic phase A1, which is magnetically soft, to the tetragonal phase L10, which is magnetically hard. Using this mechanism we were able to fabricate hard/graded composite films. Magnetic measurements revealed a significant reduction of the composite films’ switching fields in comparison with those of the single hard layer.

Published in:
Journal of Applied Physics  (Volume:109 ,  Issue: 7 )

Date of Publication: Apr 2011

Page(s):
07B729 - 07B729-3
ISSN :
0021-8979
Digital Object Identifier :
10.1063/1.3556773
Product Type:
Journals & Magazines
Date of Current Version :
05 April 2011
Issue Date :
Apr 2011

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