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

Evert Pieter Houwman, G. Maris, G.M. De Luca, G.M. De Luca, N. Niemann, Augustinus J.H.M. Rijnders, David H.A. Blank, S. Speller

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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.
Original languageUndefined
Pages (from-to)174412-
Number of pages8
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume77
Issue number18
DOIs
Publication statusPublished - 2008

Keywords

  • METIS-250712
  • IR-59170

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