A magnetic multilayer of the structure substrate/Pt-15 nm/Co-0.8 nm/Pt-wedge(0-7 nm)/Co-0.6 nm/Pt-2 nm is characterized by perpendicular anisotropy of both Co layers. For a Pt spacer thickness , the magnetization reversal of the Co-layers occurs cooperatively, while for larger , it occurs sequentially. The Co-layer with 0.6 nm thickness (CoS) is magnetically softer than the second one (CoH). In the range, there are significant changes of the switching field due to a strong gradient of the interlayer coupling. In this region, the magnetization reversal in the CoS layer takes place reversibly by the propagation of a single, straight domain wall. This specific nature of magnetization reversal is explained by a decelerated motion of the domain wall observed both for the direction corresponding to the increasing, as well as decreasing coupling energy.
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6 July 2015
Research Article|
July 06 2015
Domain wall generated by graded interlayer coupling in Co/Pt/Co film with perpendicular anisotropy
M. Matczak;
M. Matczak
1
Institute of Molecular Physics
, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland
2NanoBioMedical Centre,
Adam Mickiewicz University
, Umultowska 85, 61-614 Poznań, Poland
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R. Schäfer;
R. Schäfer
3Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Institute for Metallic Materials, P.O. Box 270116, D-01171 Dresden,
Germany and Dresden University of Technology
, Institute for Materials Science, D-01062 Dresden, Germany
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M. Urbaniak;
M. Urbaniak
1
Institute of Molecular Physics
, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland
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B. Szymański;
B. Szymański
1
Institute of Molecular Physics
, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland
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P. Kuświk;
P. Kuświk
a)
1
Institute of Molecular Physics
, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland
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A. Jarosz;
A. Jarosz
1
Institute of Molecular Physics
, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland
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M. Schmidt;
M. Schmidt
1
Institute of Molecular Physics
, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland
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J. Aleksiejew;
J. Aleksiejew
1
Institute of Molecular Physics
, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland
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S. Jurga;
S. Jurga
2NanoBioMedical Centre,
Adam Mickiewicz University
, Umultowska 85, 61-614 Poznań, Poland
4Department of Macromolecular Physics, Faculty of Physics,
Adam Mickiewicz University
, Umultowska 85, 61-614 Poznań, Poland
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F. Stobiecki
F. Stobiecki
1
Institute of Molecular Physics
, Polish Academy of Sciences, ul. Smoluchowskiego 17, 60-179 Poznań, Poland
2NanoBioMedical Centre,
Adam Mickiewicz University
, Umultowska 85, 61-614 Poznań, Poland
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a)
Electronic mail: [email protected]
Appl. Phys. Lett. 107, 012404 (2015)
Article history
Received:
May 06 2015
Accepted:
June 24 2015
Citation
M. Matczak, R. Schäfer, M. Urbaniak, B. Szymański, P. Kuświk, A. Jarosz, M. Schmidt, J. Aleksiejew, S. Jurga, F. Stobiecki; Domain wall generated by graded interlayer coupling in Co/Pt/Co film with perpendicular anisotropy. Appl. Phys. Lett. 6 July 2015; 107 (1): 012404. https://doi.org/10.1063/1.4926357
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