Self-assembled magnetic nanostripes by organic patterning.

Authors :: Ma, X.
Meyerheim, H.L.
Barthel, J.
Kirschner, J.
Schmitt, S.
Umbach, E.
Source :: Applied Physics Letters; 5/17/2004, Vol. 84 Issue 20, p4038-4040, 3p, 2 Diagrams, 2 Graphs
Publication Year :: 2004
Abstract: Selective adsorption of Fe deposited on the organic molecule 3,4,9,10-perylene-tetracarboxylic-3, 4,9,10-dianhydride (PTCDA) is used to prepare a self assembled magnetic nanostripe structure on a vicinal Ag surface. Scanning tunneling microscopy reveals that after PTCDA deposition on the Ag(10 8 7) surface a grating-like domain pattern is formed. It consists of alternating stripes of molecule-covered facets and uncovered (111) terraces. Fe adsorption takes place selectively on the molecule-covered stripes forming disk-shaped super-paramagnetic islands with a polar easy magnetization axis. [ABSTRACT FROM AUTHOR]