NDLI: Evaporated Co/Pt layered structures for magneto-optical recording

Content Provider	IEEE Xplore Digital Library
Author	Zeper, W.B. Greidanus, F.J.A.M. Carcia, P.F.
Copyright Year	1965
Abstract	The authors discuss the properties of thin (<500 AA) Co/Pt layered structures (LSs) or multilayers for magnetooptical recording. These LSs have a perpendicular magnetic anisotropy, part of which is attributed to an interface anisotropy contribution. LSs with Co layer thicknesses of 4 AA or less than Pt layer thicknesses of 10-20 AA thick have a 100% magnetic remanence and a Kerr rotation, theta /sub k/, of -0.1 degrees to -0.2 degrees as well as optical reflectivity R=70%, both at lambda =820 nm. The Curie temperature of these LSs is between 300 and 400 degrees C. The authors also present the first disk performance data for Co/Pt LSs. A pregrooved disk was coated with AlN and a 23*(3.5 AA Co+13 AA Pt) LS, and, although the figure of merit R theta /sup 2//sub k/ was not fully optimized, a carrier/noise ratio of 49 dB was achieved. This, together with the excellent magnetic properties and high oxidation resistance, makes these Co/Pt LSs very promising candidates for magnetooptical recording. Furthermore, theta /sub k/ increases at shorter wavelengths where still higher recording densities are possible.<>
Sponsorship	IEEE Magnetics Society
Starting Page	3764
Ending Page	3766
Page Count	3
File Size	341542
File Format	PDF
ISSN	00189464
Volume Number	25
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetooptic recording Perpendicular magnetic recording Magnetic properties Perpendicular magnetic anisotropy Magnetic multilayers Disk recording Anisotropic magnetoresistance Magnetic anisotropy Remanence Geometrical optics
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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