NDLI: Microstructure and coercivity of granular nanocomposite FePt-Ag multilayer films

Content Provider	IEEE Xplore Digital Library
Author	Chen, S.C. Kuo, P.C. Sun, A.C. Chou, C.Y. Fang, Y.H. Kuo, S.Y.
Copyright Year	1965
Abstract	The face-centered-tetragonal granular L1/sub 0/FePt nanoparticles with large in-plane coercivity (Hc/sub ///) of about 3923 Oe can be achieved by an Ag-capped layer of 5-nm thickness deposited onto the FePt magnetic layer, with thickness of 20 nm, after annealing at 400/spl deg/C for 30 min. The perpendicular coercivity (Hc/sub /spl perp//) of the films is increased by increasing the annealing temperature (T/sub s/), and the Hc/sub /spl perp// value is about equal to the Hc/sub /// value when the annealing temperature is increased to 600/spl deg/C. TEM-energy disperse spectrum analysis reveals that the Ag mainly distributed at the grain boundary of FePt and results in the isolation of the FePt grains as well as the increase of the grain boundary energy, which will enhance coercivity and change the preferred orientation of the FePt film.
Sponsorship	IEEE Magnetics Society
Starting Page	3340
Ending Page	3342
Page Count	3
File Size	424234
File Format	PDF
ISSN	00189464
Volume Number	41
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microstructure Coercive force Nonhomogeneous media Magnetic films Temperature Annealing Perpendicular magnetic recording Grain boundaries Magnetic multilayers Sputtering magnetron sputtering Ag-capped layer coercivity FePt–Ag multilayer films
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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