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

Autor(en)

Werner Rupp, Albert Biedermann, Boris Kamenik, Robert Ritter, Christof Klein, Elmar Platzgummer, Michael A. Schmid, Peter Varga

Abstrakt

Ar+ ion irradiation is used to induce a structural change from fcc to bcc in a 1.5nm 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 100nm scale by ion-beam projection lithography.

Organisation(en)

Physik Nanostrukturierter Materialien

Externe Organisation(en)

Technische Universität Wien, IMS Nanofabrication AG

Journal

Applied Physics Letters

Band

93

Anzahl der Seiten

3

ISSN

0003-6951

DOI

https://doi.org/10.1063/1.2969795

Publikationsdatum

2008

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/85f06dde-63d3-4c2f-86fe-1daae730f027