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Materials 2017, 10(9), 1034; doi:10.3390/ma10091034

Magnetic Force Microscopy of Nanostructured Co/Pt Multilayer Films with Perpendicular Magnetization

1
Institute for Physics of Microstructures RAS, GSP-105, 603950 Nizhny Novgorod, Russia
2
Saint Petersburg State University, University Embankment, 7/9, 199034 St. Petersburg, Russia
*
Author to whom correspondence should be addressed.
Received: 29 June 2017 / Revised: 28 August 2017 / Accepted: 31 August 2017 / Published: 5 September 2017
(This article belongs to the Special Issue Scanning Probe Microscopy of Ferroics)
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Abstract

We present the results of magnetic force microscopy investigations of domain structures in multilayer [Co (0.5 nm)/Pt (1 nm)]5 thin film structures (denoted hereafter as Co/Pt) modified by additional Co capping layers and by ion irradiation. It is demonstrated that a Co capping layer essentially changes the domain structure and decreases the threshold of magnetization reversal, due to the formation of noncollinear magnetization in Co/Pt. It is shown that local irradiation with a focused He+ ion beam enables the formation of regions with decreased easy-axis anisotropy (magnetic bubbles) that have the inverse magnetization direction in the demagnetized state of Co/Pt. The experimental results demonstrate that the magnetic bubbles can be switched using a probe of a magnetic force microscope. The possible application of these effects for the development of magnetic logic and data storage systems is discussed. View Full-Text
Keywords: perpendicular anisotropy; magnetic domains; magnetic nanostructures; magnetic nanowires; magnetic force microscopy perpendicular anisotropy; magnetic domains; magnetic nanostructures; magnetic nanowires; magnetic force microscopy
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MDPI and ACS Style

Ermolaeva, O.L.; Gusev, N.S.; Skorohodov, E.V.; Petrov, Y.V.; Sapozhnikov, M.V.; Mironov, V.L. Magnetic Force Microscopy of Nanostructured Co/Pt Multilayer Films with Perpendicular Magnetization. Materials 2017, 10, 1034.

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