6533b85ffe1ef96bd12c125a
RESEARCH PRODUCT
Direct imaging of delayed magneto-dynamic modes induced by surface acoustic waves.
Ferran MaciàFerran MaciàMathias KläuiLucia AballeAlberto Hernández-mínguezPaulo V. SantosJoan Manel HernàndezMichael FoersterJosep FontcubertaSergi LendinezNahuel StatutoNahuel StatutoSimone FinizioSimone Finiziosubject
Materials scienceMagnetic domainScienceGeneral Physics and Astronomy02 engineering and technology01 natural sciencesGeneral Biochemistry Genetics and Molecular BiologyArticleMagnetizationCondensed Matter::Materials ScienceMagneticsOpticsNickel0103 physical sciencesotorhinolaryngologic diseases010306 general physicslcsh:ScienceMagnetoMagnetization dynamicsMultidisciplinaryCondensed matter physicsbusiness.industryCircular DichroismX-RaysQSurface acoustic waveMagnetostrictionGeneral ChemistryAcoustic wave021001 nanoscience & nanotechnologyequipment and suppliesMagnetic fieldNanostructuresMicroscopy ElectronSoundlcsh:Q0210 nano-technologybusinesshuman activitiesdescription
The magnetoelastic effect—the change of magnetic properties caused by the elastic deformation of a magnetic material—has been proposed as an alternative approach to magnetic fields for the low-power control of magnetization states of nanoelements since it avoids charge currents, which entail ohmic losses. Here, we have studied the effect of dynamic strain accompanying a surface acoustic wave on magnetic nanostructures in thermal equilibrium. We have developed an experimental technique based on stroboscopic X-ray microscopy that provides a pathway to the quantitative study of strain waves and magnetization at the nanoscale. We have simultaneously imaged the evolution of both strain and magnetization dynamics of nanostructures at the picosecond time scale and found that magnetization modes have a delayed response to the strain modes, adjustable by the magnetic domain configuration. Our results provide fundamental insight into magnetoelastic coupling in nanostructures and have implications for the design of strain-controlled magnetostrictive nano-devices.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-09-01 | Nature communications |