6533b7d3fe1ef96bd125fef7
RESEARCH PRODUCT
Morphological and magnetic analysis of Fe nanostructures on W(110) by using scanning tunneling microscopy and Lorentz microscopy
Sergey V. ChernovMatthias BodeA. A. SapozhnikAnna V. ZaporozhchenkoGerd SchönhenseSergej A. NepijkoHans-joachim ElmersDmytro M. KostyukErik D. SchaeferS. I. Protsenkosubject
010302 applied physicsMaterials scienceNanostructureCondensed matter physicsAnnealing (metallurgy)General EngineeringGeneral Physics and Astronomy02 engineering and technology021001 nanoscience & nanotechnologyEpitaxy01 natural scienceslaw.inventionMagnetic fieldCondensed Matter::Materials ScienceCrystallographyMagnetizationlaw0103 physical sciencesMonolayerSingle domainScanning tunneling microscope0210 nano-technologydescription
Abstract We investigated morphological features and magnetic properties of epitaxial Fe nanostructures (films, stripes and nanoparticles) on a W(110) surface with monoatomic steps preferentially along the direction. The nanostructures were prepared in ultra-high vacuum by using electron-beam evaporation and subsequent annealing at different temperatures. Scanning tunneling microscopy measurements in-situ revealed elongated Fe nanostructures with aspect ratios of up to . The observable shape and orientation (along or perpendicular to the monoatomic steps of the substrate) of the nanostructures depended substantially on the preparation parameters. By capping the system with 7 monolayers of Pt, the magnetic properties of selected Fe nanostructures could be analyzed ex-situ using Lorentz microscopy revealing diversified results. Depending on the size and shape, different magnetization structures, such as single domain, two domains and vortex, were observed. A precise intensity profile analysis demonstrated that the magnetic field values of different magnetic structures are close to each other and equal 2.4 T.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-06 | Japanese Journal of Applied Physics |