Low-temperature growth of perpendicular FePt films

L1/sub 0/ FePt films with high perpendicular coercivity were successfully fabricated by using Cr/sub 65/Mo/sub 15/Mn/sub 20/ underlayers with subsequent forming gas (Ar 95% + H/sub 2/ 5%;) annealing. To adjust the strain energy and the orientation of FePt, Fe and Pt intermediate layers were used. Sa...

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Published in:IEEE transactions on magnetics 2005-10, Vol.41 (10), p.3199-3201
Main Authors: Yun-Chung Wu, Chih-Huang Lai, Chao-Chien Chiang, Huang, R.T.
Format: Article
Language:English
Subjects:
Anisotropic magnetoresistance
Annealing
Capacitive sensors
Coercive force
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
FePt
forming gas annealing
Iron
Magnetic films
Magnetism
Materials science
Other topics in materials science
Perpendicular magnetic recording
perpendicular media
Physics
Plasma temperature
Substrates
X-ray scattering
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cited_by cdi_FETCH-LOGICAL-c382t-4604139cea2e7caa535386e0a7a527dbbd5d9df8941e7b5b1c69532c11e05633
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container_issue 10
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container_title IEEE transactions on magnetics
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description L1/sub 0/ FePt films with high perpendicular coercivity were successfully fabricated by using Cr/sub 65/Mo/sub 15/Mn/sub 20/ underlayers with subsequent forming gas (Ar 95% + H/sub 2/ 5%;) annealing. To adjust the strain energy and the orientation of FePt, Fe and Pt intermediate layers were used. Samples annealed at 275/spl deg/C with thin Pt layers (
doi_str_mv 10.1109/TMAG.2005.855269
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To adjust the strain energy and the orientation of FePt, Fe and Pt intermediate layers were used. Samples annealed at 275/spl deg/C with thin Pt layers (&lt;5 nm) show relatively small coercivity due to the stabilizing effects from the underlayers. With the increasing thickness of Pt, the strain was locally released and the (111) grains appeared. The nucleation of the ordered L1/sub 0/ FePt phase accompanied the formation of the FePt (111) phase, resulting in a high coercivity but deteriorated perpendicular anisotropy. To maintain the [001] preferred orientation with high coercivity, the sample with a 3.5-nm Pt layer was annealed at 350/spl deg/C. 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subjects Anisotropic magnetoresistance
Annealing
Capacitive sensors
Coercive force
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
FePt
forming gas annealing
Iron
Magnetic films
Magnetism
Materials science
Other topics in materials science
Perpendicular magnetic recording
perpendicular media
Physics
Plasma temperature
Substrates
X-ray scattering
title Low-temperature growth of perpendicular FePt films
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