Out-of-plane magnetic domain structure in a thin film of La0.67Sr0.33MnO3 on SrTiO3 (001) observed by magnetic force microscopy

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Houwman, E.P. and Maris, G. and De Luca, G.M. and Niemann, N. and Rijnders, G. and Blank, D.H.A. and Speller, S. (2008) Out-of-plane magnetic domain structure in a thin film of La0.67Sr0.33MnO3 on SrTiO3 (001) observed by magnetic force microscopy. Physical Review B: Condensed matter and materials physics, 77 (18). p. 184412. ISSN 1098-0121

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Abstract:The room temperature out-of-plane magnetization of epitaxial thin films of La0.67Sr0.33MnO3 on SrTiO3 (001) has been investigated with magnetic force microscopy, using magnetic tips with very small coercivity, relative to the film. A clear magnetic pattern in the form of a checkerboard, with domain dimensions of a few hundred nanometers, was found for the thin, coherently strained films, which is approximately aligned along the maximum strain [110] and [1[overline 1]0] directions in the film. With increasing in-plane applied magnetic field, the magnetic contrast reduces, reflecting the rotation of the magnetization vector into the plane of the film. This process is reversible with the field. The out-of-plane magnetic pattern is not sensitive to rotation of the in-plane field. We attribute the observed out-of-plane magnetization component to an out-of-plane magnetic anisotropy, which is a remainder of the [111] magnetic easy axis in bulk La0.67Sr0.33MnO3 single crystal.
Item Type:Article
Copyright:© 2008 American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/59170
Official URL:http://dx.doi.org/10.1103/PhysRevB.77.184412
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