Berlin 2005 – wissenschaftliches Programm

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MA: Magnetismus

MA 20: Poster:Schichten(1-29),Spintrsp(30-45),Ex-Bias(46-63),Spindyn(64-75),Mikromat.(76-80),Cluster(81-94),Abbv.(95-99),Obflm(100-02),SpElek.(103-09),E-Theo(110-14),Mikromag.(115-16),Spin+PÜ(117-26),Mag.Mat.(127-51),Meth.(152-55),Mol.Mag(156-59),Kondo(160-65

MA 20.97: Poster

Montag, 7. März 2005, 14:00–18:00, Poster TU C

Study of the micromagnetic structure of a La_0.7Sr_0.3MnO₃ film — •Michael Ziese — University of Leipzig, Division of Magnetism and Superconductivity, Linnéstrasse 5, 04103 Leipzig

The magnetic domain-structure of easy-plane La_0.7Sr_0.3MnO₃ films has been studied by various groups and a “feather-like” pattern has been typically observed, see e.g. [1]. This pattern was recently interpreted as arising from magnetic ripples, a substructure of magnetic domains [2]. In this work the micromagnetic structure of a La_0.7Sr_0.3MnO₃ film was studied using magnetic force microscopy and micromagnetic simulations. For a 150 nm thick epitaxial, strain relaxed film grown on SrTiO₃ evidence is shown from experiment and simulation that magnetic domains have a typical size of 1 µm at room temperature and well explain the “feather-like” pattern.
J. Dho, Y. N. Kim, Y. S. Hwang, J. C. Kim and N. H. Hur, Appl. Phys. Lett. 82, 1434 (2003).
Y.-A. Soh, G. Aeppli, C.-Y. Kim, N. D. Mathur and M. G. Blamire, J. Appl. Phys. 93, 8322 (2003).