Interplay between structural and magnetic properties of L10-FePt(001) thin films directly grown on MgO(001)

Autor(en)

Bart Laenens, F M Almeida, Niki Planckaert, Kristiaan Temst, J Meersschaut, A Vantomme, Christian Rentenberger, Marcus Rennhofer, Bogdan Sepiol

Abstrakt

We present a detailed study of the magnetic and structural properties of L10-FePt thin films. The films are prepared via molecular beam epitaxy directly onto MgO(001) substrates, i.e., without buffer layer. Despite the large lattice misfit between the in-plane lattice parameters of L10 FePt and MgO, highly ordered thin films are obtained with the easy magnetization c axis perpendicular to the film plane. Via high resolution transmission electron microscopy and Rutherford backscattering measurements we focus on the FePt/MgO interface to study the misfit relaxation and the defect density. Further, the influence of elevated substrate temperatures and of postgrowth high temperature annealing on the structural and magnetic properties is discussed

Organisation(en)

Dynamik Kondensierter Systeme, Physik Nanostrukturierter Materialien

Externe Organisation(en)

Katholieke Universiteit Leuven, Instituto Tecnológico e Nuclear

Journal

Journal of Applied Physics

Band

105

Anzahl der Seiten

6

ISSN

0021-8979

DOI

https://doi.org/10.1063/1.3093955

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik, 210006 Nanotechnologie, 103018 Materialphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/interplay-between-structural-and-magnetic-properties-of-l10fept001-thin-films-directly-grown-on-mgo001(4071d5a1-edb6-44a7-9cbf-3682c49f56e8).html