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Copper Signals By Epr in La1.85M0.15CuO4 Diluted in LaMAIO4 (M=Sr, Ba)

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Supermaterials

Part of the book series: NATO Science Series ((NAII,volume 8))

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Abstract

La1.85M0.15CuO4 (M = Ba, Sr) have been dissolved in LaMA1O4 diamagnetic matrices and the corresponding EPR signals have been studied. When the copper is in a tetrahedral site (LaBaA1O4 matrix, β-K2SO4), its hyperfine structure is observed (for dilutions in the range of 1% and 3%). When copper is in octahedral position of structure (LaSrA1O4 matrix, K2NiF4), a signal of orthorhombic symmetry is seen. It is broadened by magnetic interactions that can develop in this structure and the h.f. structure is not resolved. An underlying contribution (S=3/2) assigned to clusters involving Cu3+ must be considered in both cases. It is not presently known whether this could be related to superconductivity or not.

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Author information

Authors and Affiliations

  1. Laboratoire de Cristallographie-CNRS, BP 166, Grenoble cedex 09, France

    P. Odier

  2. Centre de Recherche sur les Matériaux à Haute Température-CNRS, 45071, Orléans Cedex 2, France

    N. Raimboux & P. Simon

  3. Department of Chemistry, St Petersbourg State University, St Petersbourg, Petrodvorets, 198904, Russia

    N. Bobrysheva & M. Mikhailova

Authors
  1. P. Odier
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  2. N. Raimboux
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  3. P. Simon
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  4. N. Bobrysheva
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  5. M. Mikhailova
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Editor information

Editors and Affiliations

  1. University of Liege, Liege, Belgium

    Rudi Cloots  & Marcel Ausloos  & 

  2. University of Warsaw, Warsaw, Poland

    Marek Pekala

  3. Sandia National Laboratories, Albuquerque, NM, USA

    Alan J. Hurd

  4. University of Provence, Marseille, Cedex, France

    Gilbert Vacquier

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© 2000 Springer Science+Business Media Dordrecht

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Odier, P., Raimboux, N., Simon, P., Bobrysheva, N., Mikhailova, M. (2000). Copper Signals By Epr in La1.85M0.15CuO4 Diluted in LaMAIO4 (M=Sr, Ba). In: Cloots, R., Ausloos, M., Pekala, M., Hurd, A.J., Vacquier, G. (eds) Supermaterials. NATO Science Series, vol 8. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0912-6_11

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  • DOI: https://doi.org/10.1007/978-94-010-0912-6_11

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-0-7923-6809-0

  • Online ISBN: 978-94-010-0912-6

  • eBook Packages: Springer Book Archive

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