Effect of roughness on Perpendicular Magnetic Anisotropy in (Co90Fe10/Pt)n Superlattices

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Effect of roughness on Perpendicular Magnetic Anisotropy in (Co90Fe10/Pt)n Superlattices
Title:
Effect of roughness on Perpendicular Magnetic Anisotropy in (Co90Fe10/Pt)n Superlattices
Other Titles:
AIP Advances
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Publication Date:
14 March 2016
Citation:
AIP Advances 6, 056123 (2016)
Abstract:
Superlattice [Co90Fe10(0.21)/Pt(0.23)]n (unit in nm) with the repeat cycles n ranging from 3 to 30 were studied. Both effective anisotropy (Keff) and PMA constant (KU) reached a maximum at n=8. When the 3 nm Pt underlayer was deposited at low energy condition, the Keff and KU of (CoFe/Pt)8 are 4.0 and 6.1 Merg/cc, respectively. On the other hand, the Keff and KU increased to 6.8 and 9.7 Merg/cc, respectively, when the Pt underlayer deposited at high energy condition. As the n increases, the surface roughness monotonously increases and d111 inside the superlattice layers increase and relax from bottom to top part. The interface roughness and relaxation in superlattice reduce the PMA considerably.
License type:
http://creativecommons.org/licenses/by/4.0/
Funding Info:
Description:
ISSN:
2158-3226
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