Magnetic properties and magnetization reversal process of L10 FePt/Fe bilayers magnetic thin films
The L10FePt (10nm)/Fe ( delta nm, delta =0-15) bilayers were fabricated by using magnetron co-sputtering. The L10FePt single layer shows good perpendicular orientation and the in-plane hysteresis loop shows almost a linear behavior. When delta is less than 3nm, the FePt/Fe bilayers show behaviors li...
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Published in | Applied surface science Vol. 258; no. 20; pp. 8124 - 8127 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier
01.08.2012
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Subjects | |
Online Access | Get full text |
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Summary: | The L10FePt (10nm)/Fe ( delta nm, delta =0-15) bilayers were fabricated by using magnetron co-sputtering. The L10FePt single layer shows good perpendicular orientation and the in-plane hysteresis loop shows almost a linear behavior. When delta is less than 3nm, the FePt/Fe bilayers show behaviors like one magnetic phase, the coercivities are close to the values determined by Zeeman energy. When delta is larger than 3nm, the in-plane hysteresis loops show behaviors similar to a soft magnetic film, the coercivities of the bilayers decreases slowly with the increasing Fe thickness because of confining by the exchange length of FePt layer and Fe layer. The measured coercivities values are optimally fitted by a 1/tFe1.15 relation. The magnetization reversal process and magnetic interaction were also investigated. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0169-4332 1873-5584 |
DOI: | 10.1016/j.apsusc.2012.05.006 |