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Title: FePt-C graded media for ultra-high density magnetic recording
Authors: Chen, J.S. 
Huang, L.S.
Hu, J.F.
Ju, G.
Chow, G.M. 
Issue Date: 2010
Citation: Chen, J.S., Huang, L.S., Hu, J.F., Ju, G., Chow, G.M. (2010). FePt-C graded media for ultra-high density magnetic recording. Journal of Physics D: Applied Physics 43 (18) : -. ScholarBank@NUS Repository.
Abstract: Tri-layer FePt-C graded media composed of three FePt-C layers with each single FePt-C layer deposited at different substrate temperatures were fabricated. The single hard layer FePt-C had a large coercivity of 11.4 kOe, while the coercivity of the tri-layer sample was only 5.7 kOe. A coercivity reduction factor of 2 was achieved without sacrificing the thermal stability of the media. The tri-layer media revealed incoherent magnetization switching - domain wall propagation. The microstructure showed that the tri-layer FePt-C graded media were graded media combined with modified coupled granular continuous (CGC) media. This new kind of graded media had a lower switching field and comparable thermal stability and should have the advantage of CGC media - lower transition noise. © 2010 IOP Publishing Ltd.
Source Title: Journal of Physics D: Applied Physics
ISSN: 00223727
DOI: 10.1088/0022-3727/43/18/185001
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