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Effect of Non-Stoichiometry Oxygen Content on the Magnetization of La1.5Sr0.5NiO4+δ

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Abstract

We report on magnetization measurements of La1.5Sr0.5NiO4+δ for δ=0.01 and δ=−0.01. Zero field-cooled and field-cooled bulk magnetization measurements were performed parallel to the Ni–O planes of single crystals, and on a polycrystalline δ=0.01 sample. Striking differences in the magnetization curves are observed between the two doping levels that are identifiable in polycrystalline δ=0.01. The bulk magnetization differences indicate a crossover in the magnetic properties of La2−x Sr x NiO4+δ at half doping level, which can be used as a simple non-destructive way to determine whether La1.5Sr0.5NiO4+δ is under or over half doping.

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Authors and Affiliations

  1. Institut Laue-Langevin, BP 156, 38042, Grenoble Cedex 9, France

    P. G. Freeman

  2. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, OX11 0QX, UK

    S. R. Giblin

  3. Department of Physics, Oxford University, Oxford, OX1 3PU, UK

    D. Prabhakaran

Authors
  1. P. G. Freeman
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  2. S. R. Giblin
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  3. D. Prabhakaran
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Correspondence to P. G. Freeman.

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Freeman, P.G., Giblin, S.R. & Prabhakaran, D. Effect of Non-Stoichiometry Oxygen Content on the Magnetization of La1.5Sr0.5NiO4+δ . J Supercond Nov Magn 24, 1149–1152 (2011). https://doi.org/10.1007/s10948-010-1098-9

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  • DOI: https://doi.org/10.1007/s10948-010-1098-9

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