2014
DOI: 10.1103/physrevb.90.054410
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Picosecond wide-field magneto-optical imaging of magnetization dynamics of amorphous film elements

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Cited by 25 publications
(9 citation statements)
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“…Because the ferromagnetic resonance frequency of FeCoSiB thin films is typically above 1 GHz rather low losses in the frequency range around 150 MHz would have been expected [ 72 , 73 ] assuming simple Landau-Lifshitz-Gilbert (LLG) resonance behavior [ 74 ]. Yet, for similar amorphous magnetic films [ 75 ] and FeCoSiB films of similar thicknesses [ 76 ], domain wall resonance effects in the lower 100 MHz regime have been reported and the losses were directly connected to magnetic domain wall resonances. Eddy-current effects should not play a role in the magnetic domain wall losses [ 77 ], only internal damping is of relevance.…”
Section: Phase Noise In Magnetic Operating Pointsmentioning
confidence: 99%
“…Because the ferromagnetic resonance frequency of FeCoSiB thin films is typically above 1 GHz rather low losses in the frequency range around 150 MHz would have been expected [ 72 , 73 ] assuming simple Landau-Lifshitz-Gilbert (LLG) resonance behavior [ 74 ]. Yet, for similar amorphous magnetic films [ 75 ] and FeCoSiB films of similar thicknesses [ 76 ], domain wall resonance effects in the lower 100 MHz regime have been reported and the losses were directly connected to magnetic domain wall resonances. Eddy-current effects should not play a role in the magnetic domain wall losses [ 77 ], only internal damping is of relevance.…”
Section: Phase Noise In Magnetic Operating Pointsmentioning
confidence: 99%
“…Time-resolved implementations of established experimental techniques for mapping magnetic structures at sub-micrometer dimensions have been already accomplished for magneto-optical Kerr effect microscopy 16 , photoemission electron microscopy 17 , scanning electron microscopy with polarization analysis 18 , scanning transmission x-ray microscopy 3;19 , small-angle x-ray scattering 20 , and holography using x-rays 21 . Novel imaging approaches using circularly polarized high-harmonic radiation 22 may even provide access to magnetization dynamics on timescales of few femtoseconds.…”
mentioning
confidence: 99%
“…A very large average velocity of 600 m/s was detected for domain-wall motion in the NiFe layer by using XMCD-PEEM [90]. In particular, magnetic domain imaging by magneto-optical Kerr effect (MOKE) microscopy offers direct access to the behavior of local magnetization [91][92][93][94]. MOKE microscopy based on the Kerr and the Faraday effects is one of the most prominent techniques for observing magnetic domain Both the fundamental studies of magnetism and boosting of magnetic industry are greatly influenced by the imaging of magnetic microstructures.…”
Section: Characterization Methods Of Thin Filmsmentioning
confidence: 99%
“…MOKE microscopy based on the Kerr and the Faraday effects is one of the most prominent techniques for observing magnetic domain and is able to visualize the magnetic dynamics on fast time-scales. Allowing for the direct imaging under a continuous field excitation, a picosecond wide-field MOKE microscopy for imaging magnetization dynamics is demonstrated in [92]. An example of nanosecond domain wall displacements and spin-wave generation are observed and displayed in Figure 8 [93].…”
Section: Characterization Methods Of Thin Filmsmentioning
confidence: 99%