Abstract
A 5000 Å thick (0001) Sm film presenting the complex crystal structure of bulk samarium, constituted of a nine hexagonal close-packed planes stacking sequence, has been successfully obtained by molecular-beam epitaxy. Its magnetic behavior has been studied by resonant x-ray magnetic scattering. A long-range antiferromagnetic order of the moments on the hexagonal sites is established below 106 K. The moments on the cubic sites are ordered separately below 12 K. The magnetic coherence length of both magnetic phases has been analyzed. We show that the ordering of the cubic sites has no influence on the magnetic order at the hexagonal sites.
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