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Structural and magnetic properties of Co-doped (La, Sr)TiO3 epitaxial thin films probed using x-ray magnetic circular dichroism

DOI: 10.1088/0953-8984/21/40/406001 DOI Help

Authors: O. Copie (Unite Mixte Phys CNRS Thales) , K. Rode (Univ Dublin Trinity Coll) , R. Mattana (Unite Mixte Phys CNRS Thales) , M. Bibes (Unite Mixte Phys CNRS Thales) , V. Cros (Unite Mixte Phys CNRS Thales) , G. Herranz (Unite Mixte Phys CNRS Thales) , A. Anane (Unite Mixte Phys CNRS Thales) , R. Ranchal (Unite Mixte Phys CNRS Thales) , E. Jacquet (Unite Mixte Phys CNRS Thales) , K. Bouzehouane (Unite Mixte Phys CNRS Thales) , M-a. Arrio (Univ Paris 06) , Peter Bencok (Diamond Light Source) , N. B. Brookes (European Synchrotron Radiation Facility) , F. Petroff (Unité Mixte de Physique CNRS/Thales) , A. Barthelemy (Unite Mixte Phys CNRS Thales)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Physics: Condensed Matter

State: Published (Approved)
Published: October 2009

Abstract: We report a study of Co-doped La0.37Sr0.63TiO3-delta thin films grown by pulsed laser deposition in various oxygen pressure conditions. X-ray absorption spectroscopy and magnetic circular dichroism measurements at the Co L-2,L-3 edges reveal that the cobalt mainly substitutes for the titanium and is in an ionic state. Nevertheless, in some films, indications of additional cobalt metallic impurities were found, suggesting that the intrinsic character of this magnetic system remains questionable.

Subject Areas: Physics

Facility: ESRF

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