Magneto-optical analysis of the local magnetic field distribution across superconducting/magnetic bilayers

Authors

  • A. Chiodoni,

    Corresponding author
    1. Physics Department, Politecnico Torino, corso Duca degli Abruzzi, 24, 10129 Torino, Italy
    2. INFM UdR Torino Politecnico, corso Duca degli Abruzzi, 24, 10129 Torino, Italy
    • INFN Sez. Torino, Via P. Giuria 1, 10125 Torino, Italy
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  • L. Gozzelino,

    Corresponding author
    1. Physics Department, Politecnico Torino, corso Duca degli Abruzzi, 24, 10129 Torino, Italy
    2. INFM UdR Torino Politecnico, corso Duca degli Abruzzi, 24, 10129 Torino, Italy
    • INFN Sez. Torino, Via P. Giuria 1, 10125 Torino, Italy
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    • Phone: +39 011 5647349, Fax: +39 011 5647399

  • F. Laviano,

    Corresponding author
    1. Physics Department, Politecnico Torino, corso Duca degli Abruzzi, 24, 10129 Torino, Italy
    2. INFM UdR Torino Politecnico, corso Duca degli Abruzzi, 24, 10129 Torino, Italy
    • INFN Sez. Torino, Via P. Giuria 1, 10125 Torino, Italy
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  • P. Przyslupski,

    1. Polish Academy of Sciences, Institute of Physics, al. Lotnikow 32/46, Warszawa 02-668, Poland
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  • A. Tsarev,

    1. Polish Academy of Sciences, Institute of Physics, al. Lotnikow 32/46, Warszawa 02-668, Poland
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  • A. Wisniewski

    1. Polish Academy of Sciences, Institute of Physics, al. Lotnikow 32/46, Warszawa 02-668, Poland
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Abstract

The paper reports on an investigation of the superconducting and magnetic properties of a YBa2Cu3O7/La0.67Sr0.33MnO3 bilayer grown on LaAlO3. Beside structural, transport and optical characterisation the magneto-optical analysis was the main tool to study the local properties of the bilayer. The optical analysis shows the twinned structure exhibited by the substrate and the magneto-optical analysis allows visualizing the manganite magnetic domain structure with in plane-field magnetization, divided by domain walls where magnetic moments tilt out of the film plane. After cooling below Tc the domain-wall stray field induces vortex decoration patterns. Under an external magnetic field flux penetration is strongly modulated by the manganite domain walls. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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