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Magnetism of epitaxial Tb films on W(110) studied by spin-polarized low-energy electron microscopy

AuthorsPrieto, J. E. ; Chen, G.; Schmid, A.K.; de la Figuera, Juan
Issue Date2016
CitationPhysical Review B 94 (2016)
AbstractThin epitaxial films of Tb metal were grown on a clean W(110) substrate in ultrahigh vacuum and studied in situ by low-energy electron microscopy. Annealed films present magnetic contrast in spin-polarized low-energy electron microscopy. The energy dependence of the electron reflectivity was determined and a maximum value of its spin asymmetry of about 1% was measured. The magnetization direction of the Tb films is in-plane. Upon raising the temperature, no change in the domain distribution is observed, while the asymmetry in the electron reflectivity decreases when approaching the critical temperature, following a power law ∼(1-T/TC)β with a critical exponent β of 0.39.
Identifiersdoi: 10.1103/PhysRevB.94.174445
issn: 1550-235X
Appears in Collections:(IQFR) Artículos
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