Department of Physics and Astronomy: Publications and Other Research
Date of this Version
3-29-2019
Document Type
Article
Citation
PHYSICAL REVIEW B 99, 094438 (2019)
DOI: 10.1103/PhysRevB.99.094438
Abstract
Three-dimensional nanomagnetism is a rapidly growing field of research covering both noncollinear spin textures and curved magnetic geometries including microtubular structures. We spatially resolve the field-induced magnetization reversal of free-standing ferromagnetic microtubes utilizing multifrequency magnetic force microscopy (MFM). The microtubes are composed of Co/Pd multilayer films with perpendicular magnetic anisotropy that translates to an anisotropy with radial easy axis upon rolling-up. Simultaneously mapping the topography and the perpendicular magnetostatic force derivative, the relation between surface angle and local magnetization configuration is evaluated for a large number of locations with slopes exceeding 45 degrees. The angle-dependence of the switching field is concurrent with the Kondorsky model, i.e., the rolled-up nanomembrane behaves like a planar magnetic film with perpendicular anisotropy and a pinning dominated magnetization reversal. Additionally, we discuss methodological challenges when detecting magnetostatic force derivatives near steep surfaces.
Included in
Atomic, Molecular and Optical Physics Commons, Condensed Matter Physics Commons, Other Physics Commons
Comments
©2019 American Physical Society. Used by permission.