Title: Determination of the antiferromagnetic spin axis in epitaxial LaFeO3 films by x-ray magnetic linear dichroism spectroscopy
Authors: Luning, J. ×
Nolting, F.
Scholl, A.
Ohldag, H.
Seo, Jin Won
Fompeyrine, J.
Locquet, Jean-Pierre
Stohr, J. #
Issue Date: 2003
Series Title: Physical review. B, Condensed matter and materials physics vol:67 issue:21
Conference: date:Stanford Univ, Stanford Synchrotron Radiat Lab, Stanford, CA 94309 USA; Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA; IBM Corp, Div Res, Zurich Res Lab, CH-8803 Ruschlikon, Switzerland; Univ Neuchatel, Inst Phys, CH-2000 Neuchatel, Switzerland
Article number: 214433
Abstract: We report x-ray magnetic linear dichroism (XMLD) measurements at the Fe L-2,L-3 absorption edges of thin antiferromagnetic (AFM) LaFeO3 films grown epitaxially on SrTiO3 (100) and (110) substrates and a stepped (100) substrate with a 2degrees miscut. The spin structure in the near-surface region of the thin films, and in particular the orientation of the AFM axis, has been derived from the observed polarization dependence. We show that in all cases, the orientation of the AFM axis differs from that of bulk LaFeO3. In particular, we find that the AFM axis is rotated away from its bulk orientation and lies parallel to the (111) plane of the underlying cubic SrTiO3 substrate, with its projection on the film surface parallel to the c axis of the orthorhombic LaFeO3 crystal lattice. Our results are of importance in light of existing models for the exchange coupling and bias of antiferromagnetic/ferromagnetic multilayers. They indicate the inadequacy of models that assume a bulk like spin structure near surfaces and interfaces.
ISSN: 1098-0121
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

Files in This Item:

There are no files associated with this item.

Request a copy


All items in Lirias are protected by copyright, with all rights reserved.

© Web of science