Submonolayer magnetism of Fe(110) on W(110): Finite width scaling of stripes and percolation between islands

Submonolayer magnetism of Fe(110) on W(110): Finite width scaling of stripes and percolation between islands

Relations between magnetism and morphology in submonolayer films of Fe(110) on W(110) were studied using spin polarized electron diffraction and scanning tunneling microscopy. Films prepared at 600K form monolayer stripes along with the W steps; they are ferromagnetic with T sub c slowly decreasing...

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Veröffentlicht in:Physical review letters 1994-08, Vol.73 (6), p.898-901
Hauptverfasser: Elmers, HJ, Hauschild, J, Höche, H, Gradmann, U, Bethge, H, Heuer, D, Köhler, U
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container_end_page 901
container_issue 6
container_start_page 898
container_title Physical review letters
container_volume 73
creator Elmers, HJ
Hauschild, J
Höche, H
Gradmann, U
Bethge, H
Heuer, D
Köhler, U
description Relations between magnetism and morphology in submonolayer films of Fe(110) on W(110) were studied using spin polarized electron diffraction and scanning tunneling microscopy. Films prepared at 600K form monolayer stripes along with the W steps; they are ferromagnetic with T sub c slowly decreasing from 225K near theta = 1 to 180K near theta = 0.1. The decrease scales with 1/ theta . Films prepared at 300K mucleate by islands which start to coalesce near theta = 0.6. for theta < = 0.58, they are superparamagnetic at T > = 115K. In a narrow theta range of only 2%, magnetic percolation occurs, resulting in ferromagnetism with T sub c > = 190K for theta > = 0.60.
doi_str_mv 10.1103/physrevlett.73.898
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title Submonolayer magnetism of Fe(110) on W(110): Finite width scaling of stripes and percolation between islands
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