Magnetism of step-decorated Fe on Pd(110)

Li, Dongqi; Roldan Cuenya, Beatriz; Pearson, J.; Bader, S. D.; Keune, W.

doi:10.1103/PhysRevB.64.144410

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Magnetism of step-decorated Fe on Pd(110)

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Li, D., Roldan Cuenya, B., Pearson, J., Bader, S. D., & Keune, W. (2001). Magnetism of step-decorated Fe on Pd(110). Physical Review B, 64(14): 144410. doi:10.1103/PhysRevB.64.144410.

Cite as: https://hdl.handle.net/21.11116/0000-0006-EC12-C

Abstract

We investigate the growth and magnetic properties of submonolayer Fe wedges on a stepped Pd(110) substrate with reflection high-energy electron diffraction (RHEED) and the surface magneto-optic Kerr effect. RHEED suggests that Fe atoms decorate the steps to form nanostripes. These stripes are ferromagnetic above 0.3 monolayer Fe coverage, or ∼6 Å average stripe width, and have a magnetic easy axis along the surface normal. The onset temperatures of the broadened transition exhibit finite-size scaling with a shift exponent λ of 1.2±0.3, consistent with two-dimensional Ising expectations. The coercivity is less temperature dependent than the magnetization.