Dresden 2006 – wissenschaftliches Programm

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MA: Magnetismus

MA 20: Poster: Films(1-36) Transp(37-56) Ex.Bias(57-67) Spindyn(68-80) Micromag(81-95) Particle(96-109) Imag.+Surface(110-113) Spinelectr(114-122) Theory+Micromag(123-131) Spinstr+Aniso(132-142) MagMat(143-156) Meas(157,158) MolMag+Kondo(159-162) Postdead(163-)

MA 20.21: Poster

Dienstag, 28. März 2006, 15:15–19:15, P1

Magnetic and structural properties of Cr₂O₃ thin film systems — •Tiberius Turi, Subhankar Bedanta, Pavel Borisov, Xi Chen, Andreas Hochstrat, Vladimir Shvartsman, and Wolfgang Kleemann — Angewandte Physik, Universität Duisburg-Essen, D-47048 Duisburg, Germany

Recently we demostrated magnetoelectric (ME) switching of exchange bias in magnetic heterosystems based on single crystalline antiferromagnetic Cr₂O ₃ [1], which could be applied to develop a new kind of magnetoelectronic devices. For a closer approach to technical application, thin films of Cr₂ O₃ are prepared by Pulsed Laser Deposition (PLD) and Molecular Beam Epitaxy (MBE), respectively. X-ray diffraction shows epitaxial Cr₂O₃ (111) in both cases. Atomic Force Microscopy (AFM) is used to characterize the topography of the samples. Various magnetic heterostructures comprising CoFe, CrO₂ and Co/Pt layers, respectively, on top of Cr₂O₃ thin films are investigated.

[1] P. Borisov, A. Hochstrat, X. Chen, W. Kleemann, and Ch. Binek, Phys. Rev. Lett. 94, 117203 (2005).