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Exchange Bias in L1(0) (111)-Oriented FePt-Based Pseudo Spin Valves
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
2009 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 45, no 10, 3881-3884 p.Article in journal (Refereed) Published
Abstract [en]

The coupling between hard FePt and soft NiFe layers through a Cu interlayer has been studied in L1(0) (111) FePt(20)/CoFe(1.5)/Cu(3.5 or 4.5)/CoFe(2)/NiFe(3) (in nanometers) pseudo spin valves. The soft-layer hysteresis loops exhibit clear shifts in the field axis (exchange-bias-like) and a marked coercivity enhancement. It is found that several parameters such as the thickness of the Cu layer or the interface roughness influence the exchange bias properties of the systems, while others (e. g., temperature) are less important. This interlayer coupling arises from the competition between dipolar and Ruderman-Kittel-Kasuya-Yoshida (RKKY) interactions between the layers.

Place, publisher, year, edition, pages
2009. Vol. 45, no 10, 3881-3884 p.
Keyword [en]
Exchange bias, interlayer coupling, L1(0) FePt
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-30668DOI: 10.1109/TMAG.2009.2024122ISI: 000270149700121Scopus ID: 2-s2.0-70349347595OAI: oai:DiVA.org:kth-30668DiVA: diva2:403122
Note
QC 20110311Available from: 2011-03-11 Created: 2011-03-04 Last updated: 2017-12-11Bibliographically approved

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Zha, ChaolinNogués, JosepÅkerman, Johan
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