The Ag effect on magnetic properties and microstructure of FePt/Ag sub(2)Te particulate films

A [FePt (1 nm)/Ag sub(2)Te(t)] sub(10) (thickness t = 0.1-0.3 nm) multilayer was deposited alternately on glass substrate and subsequently annealed by a rapid thermal process (RTP). After the RTP, the interface between FePt and Ag sub(2)Te was intermixed, forming particulate films. The L1 sub(0) FeP...

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Bibliographic Details
Published in:Journal of alloys and compounds 2010-07, Vol.502 (2), p.456-460
Main Authors: Tsai, Jai-Lin, Tzeng, Hsin-Te, Lin, Guo-Bing, Liu, Bing-Fong
Format: Article
Language:English
Subjects:
Capping
Ferrous alloys
Intermetallics
Iron compounds
Magnetization
Multilayers
Platinum compounds
Silver
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Summary:A [FePt (1 nm)/Ag sub(2)Te(t)] sub(10) (thickness t = 0.1-0.3 nm) multilayer was deposited alternately on glass substrate and subsequently annealed by a rapid thermal process (RTP). After the RTP, the interface between FePt and Ag sub(2)Te was intermixed, forming particulate films. The L1 sub(0) FePt grain size decreases from 23 to 14 nm as t of the Ag sub(2)Te intermediate layer increases from 0.1 to 0.3 nm. The (FePt/Ag sub(2)Te) sub(10) particulate film shows perpendicular magnetization. Compared to (FePt/Ag sub(2)Te) sub(10), the Ag/(FePt/Ag sub(2)Te) sub(10)/Ag multilayer also shows perpendicular magnetization with less c-axis dispersion. The Ag capping and seed layers reduce the ordering temperature of FePt but facilitate its grain growth during RTP. As a result, the FePt grains are refined and well-separated by the Ag sub(2)Te phase, but change to a continuous film after inserting Ag capping and seed layers.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2010.04.195