Physical Review Letters · 2001 · 127 citations · 23 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMagnetic MaterialsNanotechnologyFerromagnetic MaterialsFerromagnetismMagnetic AnisotropyMagnetic NanomaterialsMagnetic Properties Of SolidsPhase TransitionsMagnetic Circular DichroismMagnetic NanoparticlesMagnetic Phase DiagramMagnetic Phase TransitionsMagnetic Properties Of ClustersMagnetization In NanostructuresNanomagnetismPerpendicular Magnetic Anisotropy
The spin, in-plane and out-of-plane orbital and magnetic dipole moments of almost purely interfacial Co atoms were directly determined for Au/2-monolayer Co nanoclusters/Au(111) by angle-dependent magnetic circular x-ray dichroism (MCXD) measurements. The field- and temperature-dependent MCXD evidences a ferromagnetic(FM)-to-superparamagnetic phase transition in single-domain clusters with decreasing size. The interfacial moments are remarkably enhanced as compared with bulk values, verifying theoretical predictions. The FM clusters show strong perpendicular magnetic anisotropy, providing promise of applications for nanoscale magnetic bits.
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X-ray circular dichroism as a probe of orbital magnetization
B. T. Thole, Paolo Carra, F. Sette et al. · Physical Review Letters · 1992 · 2.7K citations
X-ray circular dichroism and local magnetic fields
Paolo Carra, B. T. Thole, M. Altarelli et al. · Physical Review Letters · 1993 · 2.3K citations