HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Magnetic anisotropy of one-dimensional Co nanostructures

Abstract : We report a combined scanning tunneling microscopy and x-ray magnetic circular dichroism study to investigate the structural properties and magnetic behavior of a Co ultrathin film composed of dimer nanolines. These Co nanolines, ∼6 nm in length, are grown on a Si nanotemplate composed of nanoribbons self-organized on Ag(110). The first two Co layers present a weak magnetic response while upper Co layers exhibit an enhanced magnetization. Orbital and spin moments are experimentally determined. We show that an in-plane magnetization is favored and the magnetic anisotropy energy associated with the directions parallel and perpendicular to the nanolines are measured. The Co ultrathin film is shown to behave as a superparamagnetic system composed of one-dimensional segments containing each ∼170 ferromagnetically coupled Co atoms, with a blocking temperature estimated to be between 20 and 40 K. Our set of experiments allows for a comprehensive description of the magnetic behavior of the Co nanoline ultrathin film grown on a functionalized metallic substrate.
Complete list of metadata

Contributor : Fabien Cheynis Connect in order to contact the contributor
Submitted on : Tuesday, December 15, 2020 - 8:30:20 PM
Last modification on : Monday, January 10, 2022 - 10:16:08 AM
Long-term archiving on: : Tuesday, March 16, 2021 - 8:22:43 PM


Daher Mansour et al PRB_submit...
Files produced by the author(s)



Michel Daher Mansour, Romain Parret, F. Cheynis, Matthieu Petit, Fadi Choueikani, et al.. Magnetic anisotropy of one-dimensional Co nanostructures. Physical Review B, American Physical Society, 2020, 102 (15), pp.155403. ⟨10.1103/PhysRevB.102.155403⟩. ⟨hal-02960045⟩



Record views


Files downloads