Orientation-Driven Large Magnetic Hysteresis of Er(III) Cyclooctatetraenide-Based Single-Ion Magnets Adsorbed on Ag(100).

ABSTRACT: The molecular self-assembly and the magnetic properties of two cyclooctatetraenide (COT)-based single-ion magnets (SIM) adsorbed on Ag(100) in the sub-monolayer (ML) range are reported. Our study combines scanning-tunneling microscopy, X-ray photoemission spectroscopy and polarized X-ray absorption spectroscopy to show that Cp*ErCOT (Cp* = 1,2,3,4,5-pentamethylcyclopentadienide anion) SIMs self-assemble as alternating compact parallel rows including standing-up and lying-down conformations, following the main crystallographic directions of the substrate. Conversely, K[Er(COT)₂], obtained from subliming the [K(18-c-6)][Er(COT)₂]·2THF salt, forms uniaxially ordered domains with the (COT)^2- rings perpendicular to the substrate plane. The polarization-dependent

SUBMITTER: Romankov V 

PROVIDER: S-EPMC11934973 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature