Title of article
Characterization of Cu additive FePt–C granular films
Author/Authors
W.B. Mi، نويسنده , , Hui Liu، نويسنده , , Z.Q. Li، نويسنده , , P. Wu، نويسنده , , E.Y. Jiang، نويسنده , , Dorothee H.L. Bail، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
7
From page
8688
To page
8694
Abstract
FePt–C granular films doped with different Cu atomic fractions (xCu) were fabricated using facing-target sputtering at room temperature and
subsequently annealed at 650 8C. Structural analyses reveal that the as-deposited films are in amorphous state. Appropriate Cu addition (xCu = 14)
can improve the ordering of L10 FePt phase, and excessive Cu doping destroys the formation of ordered L10 phase with the appearance of Fe3C and
CuPt phases. Besides, preferential graphitization of amorphous carbon (a-C) occurs near large metal particles upon annealing. Annealing turns the
as-deposited superparamagnetic films into ferromagnetic associated with coercivity peaks at xCu = 14, drops from 11.2 kOe at 5 K to 7.2 kOe at
300 K in a 50 kOe field
Keywords
Granular/nanocomposite films , L10 phase , graphitization , Magnetic properties , FePt films
Journal title
Applied Surface Science
Serial Year
2006
Journal title
Applied Surface Science
Record number
1002773
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