NDLI: Study of Magnetic Easy Axis 3-D Arrangement in L1<formula formulatype=inline><tex>$_{0}$</tex></formula> CoPt(111)/Pt(111)/MgO(100) Tilted System for Perpendicular Recording

Content Provider	IEEE Xplore Digital Library
Author	Varvaro, G. Agostinelli, E. Laureti, S. Testa, A.M. Generosi, A. Paci, B. Albertini, V.R.
Copyright Year	1965
Abstract	We report a study of angular magnetic properties of high-anisotropy L1₀ CoPt (111) films having a tilted magnetic easy axis configuration without an oblique-grain microstructure. In particular, we investigated the field dependence of remanent magnetization while rotating the magnetic field inside three intersecting planes. The out-of-plane tilting of the L1₀ c-axis (the easy axis of the tetragonal cell) was induced by using a Pt (111) underlayer deposited onto a single-crystal MgO substrate in a conventional frontal pulsed laser deposition (PLD). The observed behavior is consistent with the presence of four easy axes with mutually orthogonal in-plane projections, symmetrically tilted at 36deg with respect to the film plane. Such a system can be used, like a common single-axis tilted medium, to record information in perpendicular mode, lowering the writing field to approximately 75% of the value along the easy direction, while still maintaining the high thermal stability typical of the L1₀ alloy. Moreover, the in-plane charge compensation arising from this easy axis arrangement when a perpendicular writing field is applied may favor a media noise reduction and better performance with respect to a single-axis tilted system.
Sponsorship	IEEE Magnetics Society
Starting Page	643
Ending Page	647
Page Count	5
File Size	967260
File Format	PDF
ISSN	00189464
Volume Number	44
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Perpendicular magnetic recording Pulsed laser deposition Writing Magnetic properties Magnetic films Microstructure Magnetization Magnetic fields Substrates Optical pulses tilted magnetic recording EDXD L1 $_{0}$ CoPt (111) PLD
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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