scholarly journals Frustrated magnetic vortices in a triad of permalloy rings: Magneto-optical Kerr effect, magnetic force microscopy, and micromagnetic simulations

2006 ◽  
Vol 73 (9) ◽  
Author(s):  
V. Rose ◽  
K. Buchanan ◽  
S.-H. Chung ◽  
M. Grimsditch ◽  
V. Metlushko ◽  
...  
Keyword(s):  
Kerr Effect ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Optical Kerr Effect ◽  
Micromagnetic Simulations ◽  
Force Microscopy ◽  
Magnetic Vortices ◽  
Magneto Optical Kerr Effect

Magnetization Configurations in NiFe Slotted Rings Studied by Magneto-Optical Kerr Effect and Magnetic Force Microscopy

2012 ◽  
Vol 48 (4) ◽  
pp. 1269-1272 ◽  
Author(s):  
Marco Madami ◽  
Diego Bisero ◽  
Gianluca Gubbiotti ◽  
Silvia Tacchi ◽  
Giovanni Carlotti ◽  
...  
Keyword(s):  
Kerr Effect ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Optical Kerr Effect ◽  
Force Microscopy ◽  
Magneto Optical Kerr Effect

scholarly journals Manipulation of magnetic vortex parameters in disk-on-disk nanostructures with various geometry

2015 ◽  
Vol 6 ◽  
pp. 697-703 ◽  
Author(s):  
Maxim E Stebliy ◽  
Alexander G Kolesnikov ◽  
Alexey V Ognev ◽  
Alexander S Samardak ◽  
Ludmila A Chebotkevich
Keyword(s):  
Vortex Core ◽  
Kerr Effect ◽  
Magnetic Force ◽  
Magnetic Nanostructures ◽  
Magnetic Vortex ◽  
Motion Path ◽  
Microscopy Imaging ◽  
Micromagnetic Simulations ◽  
Force Microscopy ◽  
Magneto Optical Kerr Effect

Magnetic nanostructures in the form of a sandwich consisting of two permalloy (Py) disks with diameters of 600 and 200 nm separated by a nonmagnetic interlayer are studied. Magnetization reversal of the disk-on-disk nanostructures depends on the distance between centers of the small and big disks and on orientation of an external magnetic field applied during measurements. It is found that manipulation of the magnetic vortex chirality and the trajectory of the vortex core in the big disk is only possible in asymmetric nanostructures. Experimentally studied peculiarities of a motion path of the vortex core and vortex parameters by the magneto-optical Kerr effect (MOKE) magnetometer are supported by the magnetic force microscopy imaging and micromagnetic simulations.

Peculiarities in Optical and Magneto-Optical Spectra of GaMnSb Layers Grown by Laser Ablation

2012 ◽  
Vol 190 ◽  
pp. 562-565 ◽  
Author(s):  
E.A. Gan'shina ◽  
L.L. Golik ◽  
V.I. Kovalev ◽  
Z.E. Kun’kova ◽  
M.P. Temiryazeva ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Kerr Effect ◽  
Magnetic Force Microscopy ◽  
Room Temperature ◽  
Magnetic Force ◽  
Interband Transitions ◽  
Spectral Ellipsometry ◽  
Force Microscopy ◽  
Mn Content ◽  
Laser Ablation Technique

Optical and magneto-optical properties of GaMnSb layers fabricated on GaAs (001) substrates by laser ablation technique were studied using spectral ellipsometry (E =1.24-3.25 eV) and the transversal Kerr effect (TKE) (E = 0.5 4.2 eV) as well as atomic and magnetic force microscopy. Spectra of the constituents of the diagonal components of the permittivity tensor as well as TKE depended substantially on the layer fabrication conditions. At room temperature a strong resonant band was observed in the TKE spectra for the GaMnSb layers with low Mn content in the energy range E 0.5-1.5 eV. This resonant TKE band was explained by excitation of surface plasmons in MnSb nanoclusters, which arose during the growth of the layers. In the energy region E >1.5 eV the TKE spectra were related to interband transitions in MnSb inclusions.

scholarly journals Skyrmion Formation in Nanodisks Using Magnetic Force Microscopy Tip

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2627
Author(s):  
Mateusz Zelent ◽  
Iuliia V. Vetrova ◽  
Jan Šoltýs ◽  
Xiaoguang Li ◽  
Yan Zhou ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Local Field ◽  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Magnetic State ◽  
Magnetic Domain ◽  
Local Magnetic Field ◽  
Micromagnetic Simulations ◽  
Force Microscopy ◽  
Magnetization State

We demonstrated numerically the skyrmion formation in ultrathin nanodisks using a magnetic force microscopy tip. We found that the local magnetic field generated by the magnetic tip significantly affects the magnetization state of the nanodisks and leads to the formation of skyrmions. Experimentally, we confirmed the influence of the local field on the magnetization states of the disks. Micromagnetic simulations explain the evolution of the magnetic state during magnetic force microscopy scanning and confirm the possibility of skyrmion formation. The formation of the horseshoe magnetic domain is a key transition from random labyrinth domain states into the skyrmion state. We showed that the formation of skyrmions by the magnetic probe is a reliable and repetitive procedure. Our findings provide a simple solution for skyrmion formation in nanodisks.

scholarly journals A Ti/Pt/Co Multilayer Stack for Transfer Function Based Magnetic Force Microscopy Calibrations

2021 ◽  
Vol 7 (6) ◽  
pp. 78
Author(s):  
Baha Sakar ◽  
Sibylle Sievers ◽  
Alexander Fernández Scarioni ◽  
Felipe Garcia-Sanchez ◽  
İlker Öztoprak ◽  
...  
Keyword(s):  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Reference Sample ◽  
Image Data ◽  
Stray Field ◽  
Magnetization Distribution ◽  
Finite Width ◽  
Stripe Domain ◽  
Micromagnetic Simulations ◽  
Force Microscopy

Magnetic force microscopy (MFM) is a widespread technique for imaging magnetic structures with a resolution of some 10 nanometers. MFM can be calibrated to obtain quantitative (qMFM) spatially resolved magnetization data in units of A/m by determining the calibrated point spread function of the instrument, its instrument calibration function (ICF), from a measurement of a well-known reference sample. Beyond quantifying the MFM data, a deconvolution of the MFM image data with the ICF also corrects the smearing caused by the finite width of the MFM tip stray field distribution. However, the quality of the calibration depends critically on the calculability of the magnetization distribution of the reference sample. Here, we discuss a Ti/Pt/Co multilayer stack that shows a stripe domain pattern as a suitable reference material. A precise control of the fabrication process, combined with a characterization of the sample micromagnetic parameters, allows reliable calculation of the sample’s magnetic stray field, proven by a very good agreement between micromagnetic simulations and qMFM measurements. A calibrated qMFM measurement using the Ti/Pt/Co stack as a reference sample is shown and validated, and the application area for quantitative MFM measurements calibrated with the Ti/Pt/Co stack is discussed.

scholarly journals A Ti/Pt/Co Multilayer Stack for Transfer Function Based Magnetic Force Microscopy Calibrations

2021 ◽  
Author(s):  
Baha Sakar ◽  
Sibylle Sievers ◽  
Alexander Fernández Scarioni ◽  
Felipe Garcia-Sanchez ◽  
İlker Öztoprak ◽  
...  
Keyword(s):  
Magnetic Force Microscopy ◽  
Magnetic Force ◽  
Reference Sample ◽  
Image Data ◽  
Stray Field ◽  
Magnetization Distribution ◽  
Finite Width ◽  
Stripe Domain ◽  
Micromagnetic Simulations ◽  
Force Microscopy

Magnetic force microscopy (MFM) is a widespread technique for imaging magnetic structures with a resolution of some 10 nanometers. MFM can be calibrated to obtain quantitative (qMFM) spatially resolved magnetization data in units of A/m by determining the calibrated point spread function of the instrument, its instrument calibration function (ICF), from a measurement of a well-known reference sample. Beyond quantifying the MFM data, a deconvolution of the MFM image data with the ICF also corrects the smearing caused by the finite width of the MFM tip stray field distribution. However, the quality of the calibration depends critically on the calculability of the magnetization distribution of the reference sample. Here, we discuss a Ti/Pt/Co multilayer stack which shows a stripe domain pattern as a suitable reference material. A precise control of the fabrication process combined with a characterization of the sample micromagnetic parameters allows to reliably calculate the sample’s magnetic stray field, proven by a very good agreement between micromagnetic simulations and qMFM measurements. A calibrated qMFM measurement using the Ti/Pt/Co stack as a reference sample is shown and validated and the application area for quantitative MFM measurements calibrated with the Ti/Pt/Co stack is discussed.

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