TITLE

Ion-beam induced fcc-bcc transition in ultrathin Fe films for ferromagnetic patterning

AUTHOR(S)
Rupp, W.; Biedermann, A.; Kamenik, B.; Ritter, R.; Klein, Ch.; Platzgummer, E.; Schmid, M.; Varga, P.
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p063102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Ar+ ion irradiation is used to induce a structural change from fcc to bcc in a 1.5 nm thick Fe film epitaxially grown on a Cu(100) crystal. Scanning tunneling microscopy and low-energy electron diffraction show the nucleation of bcc nanocrystals, which grow with increasing ion dose. As a consequence of the structural change, the irradiated iron film becomes strongly ferromagnetic at room temperature. We present a model for the process of the transformation and demonstrate writing a magnetic pattern at the 100 nm scale by ion-beam projection lithography.
ACCESSION #
34000042

 

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