NDLI: Effects of SiO<formula formulatype=inline> <tex Notation=TeX>$_{2}$</tex></formula> Addition in FePt on Microstructures and Magnetic Properties on Two Different MgO Substrates

Content Provider	IEEE Xplore Digital Library
Author	Byun, W.B. Lee, K.J. Lee, T.D.
Copyright Year	1965
Abstract	Ordered FePt film is attractive for its very high perpendicular anisotropy. In the present study, we report different texture formation and mechanisms of ordering FePt films on MgO (100) single crystal (A) substrates and MgO (200) polycrystalline film formed on SiO₂/Si (B) substrates with and without SiO₂ addition. Films with structure of [0.24 nm Pt/0.25 nm Fe/0.21 nm SiO₂]₁₅ were deposited on 600degC substrates and subsequently treated by rapid thermal annealing. In the as-deposited state, FePt grain size was smaller and its degree of ordering was lower on substrate (B) than substrate (A) regardless of SiO₂ addition. Upon annealing, grain growth was more significant on substrate (A) than on substrate (B), and degree of ordering kept nearly constant. However, in the case of SiO₂ addition, upon annealing, grain growth was more significant on substrate (B) than substrate (A), and the ordering parameter increased on both substrates (A) and (B). This indicates ordering reaction is dominated by phase separation of Mg, O or MgO incorporated in FePt grains of the as-deposited states during the short time rapid annealing treatments. Different texture formation and grain size difference in the two different substrates will be discussed together with the mechanism of ordering in FePt films.
Sponsorship	IEEE Magnetics Society
Starting Page	2705
Ending Page	2708
Page Count	4
File Size	1372681
File Format	PDF
ISSN	00189464
Volume Number	45
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Substrates Temperature Magnetic materials Semiconductor films Grain size Crystalline materials Iron Rapid thermal annealing Chromium Microstructure SiO$_{2}$ addition FePt MgO substrates ordering mechanism
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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