magnetic anisotropy of multilayer periodical structures from magnetic nanoislands
DESCRIPTION
Magnetic anisotropy of multilayer periodical structures from magnetic nanoislands. Boltaev A.P., Pudonin F.A., Sherstnev I.A. P.N.Lebedev Physical Institute of the Russian Academy of Science, 119991, Moscow, Russia. Contents. Introduction Some properties of multilayer island structures - PowerPoint PPT PresentationTRANSCRIPT
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Magnetic anisotropy of multilayer periodical structures from
magnetic nanoislands.
Boltaev A.P., Pudonin F.A., Sherstnev I.A.
P.N.Lebedev Physical Institute of the Russian Academy of Science, 119991,
Moscow, Russia
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Contents
• Introduction Some properties of multilayer island
structures One-directional anisotropy in island
structures Rotation in of samples in magnetic field Vortex in magnetic nanostructures Conclusion
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Spin-tunneling structure
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Multilayer periodical island system
RF-sputtering systems:
(FeNi - CoNi)10
(FeNi - C) 10
(FeNiCo - Co)10
Layer thickness 0,4-0,8 nm
Island size 6-30 nm
Distance between
islands 1 – 6 nm
Number of layers 1-20
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AFM and MFM images of the (FeNi-CoNi)N structure surface
Surface topographyMagnetic topograpgy of the surface
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Magnetoresistance of (FeNi-CoNi)10
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Kerr effect for system (FeNi-CoNi)20 at different orientation of magnetic field
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Polar diagrams of sample magnetization
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Exchange anisotropy
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Experimental hysteresis loops
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The dependence of magnetization on rotation direction of sample in magnetic field.
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Vortexes in ferromagnetic nanoparticles
Vortex in ferromagnetic disk Possible magnetization in nanoislands system
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Results of modeling
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Vortex magnetic field in samples
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Action
Action
Results of vortex magnetic field action
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Result of vortex magnetic field action
Before action After action
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Conclusion
Thanks you!
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Possible situation