Changes of Structure and Magnetic Properties of (Ni_{80}Fe_{20}/Au/Co/Au)_N Multilayers as a Function of Repetition Number N

• Authors: B. Szymański , F. Stobiecki , M. Urbaniak , P. Siffalovic , E. Majkova
• Languages of publication: EN

Abstracts

EN

The influence of repetition number N on magnetoresistance, magnetic reversal and structure of sputtered (Ni_{80}Fe_{20}/Au/Co/Au)_N multilayers was investigated. The multilayers are characterized by in-plane (Ni_{80}Fe_{20}) and out-of-plane (Co) magnetic anisotropy of ferromagnetic layers and show considerable magnetoresistance effect (ΔR/R) of the giant magnetoresistance type. Increased N results in an enhancement of ΔR/R from about 0.5% for N=1 up to above 5% for N=15. This enhancement is caused by: diminishing the role of electron scattering at the surfaces, decreasing the effect of structural imperfection and the lack of the perpendicular anisotropy of Co layer in the first period. The interpretation is corroborated by low ΔR/R value observed for N=1 and an evolution of the ΔR(H)/R dependence with increasing N. The anisotropy field of Co layers also increases with N.

Keywords

EN

75.47.De; 75.70.Cn

Discipline

• 75.70.Cn: Magnetic properties of interfaces (multilayers, superlattices, heterostructures)
• 75.47.De: Giant magnetoresistance

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 1
• Pages: 205-208

Dates

published

2008-01

received

2007-07-09

Contributors

author

B. Szymański

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

F. Stobiecki

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

M. Urbaniak

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

P. Siffalovic

• Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia

author

E. Majkova

• Institute of Physics, Slovak Academy of Sciences, Dubravska cesta 9, 845 11 Bratislava, Slovakia

References

• 1. F.B. Mancoff, J.H. Dunn, B.M. Clemens, R. White, Appl. Phys. Lett. 77, 1879 (2000)
• 2. B. Szymański, F. Stobiecki, M. Urbaniak, J. Alloy Comp. 423, 236 (2006); F. Stobiecki, B. Szymański, T. Luciński, J. Dubowik, M. Urbaniak, K. Röll, J. Magn. Magn. Mater. 282, 32 (2004)
• 3. D. Houssamedine, U. Ebels, D. Delaët, B. Rodmacq, I. Forastrau, F. Ponthenier, M. Brunet, C. Thirion, J.-P. Michel, L. Prejbeanu-Buda, M.-C. Cyrille, O. Redon, D. Dieny, Nature Mater., doi:10.1038/nmat1905 (2007)

Identifiers

DOI

10.12693/APhysPolA.113.205