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Magnetic properties of Nd3+ in Nd−Ba−Cu−O-compounds

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Zeitschrift für Physik B Condensed Matter

Abstract

Neutron diffraction, neutron spectroscopy and magnetization measurements have been employed to study the structural, electronic, and magnetic behavior of eleven compounds with the general formula Nd1+y Ca v Ba2−y−v Cu3O x (0≦y≦0.5; 0≦v≦0.25; 6≦x≦7). The structure turned out to react to oxygen reduction similar as other 123-compounds, yielding discontinuities close to the metal-insulator-transition and the well-known relations of bond lengths as a function ofT c. The crystalline electric field (CEF) interaction, splitting the 10-fold degenerate ground-state J-multiplet of the Nd3+-ions into five doublet states, was investigated by neutron spectroscopy. The derived CEF parameters have been used to determine changes in the electronic surroundings of the Nd3+ ions. In addition, with the help of the CEF parameters the thermodynamic magnetic properties of these compounds were calculated which turn out to be in good agreement with the experimental data.

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Authors and Affiliations

  1. Laboratorium für Neutronenstreuung, Eidgenössische Technische Hochschule Zürich, CH-5232, Villigen PSI, Switzerland

    P. Allenspach, J. Mesot, U. Staub, M. Guillaume & A. Furrer

  2. Ames Laboratory, Iowa State University, 50011-3020, Ames, IA, USA

    S. -I. Yoo, M. J. Kramer & R. W. McCallum

  3. Hahn-Meitner Institute/N2, D-14109, Berlin-Wannsee, Germany

    H. Maletta

  4. Institute Laue-Langevin, 156X, F-38042, Grenoble Cedex, France

    H. Blank & H. Mutka

  5. Rutherford Appleton Laboratory, Chilton, OX11OQX, Didcot, Oxon, UK

    R. Osborn, M. Arai, Z. Bowden & A. D. Taylor

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  1. P. Allenspach
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  2. J. Mesot
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  3. U. Staub
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  4. M. Guillaume
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  5. A. Furrer
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  6. S. -I. Yoo
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  7. M. J. Kramer
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  8. R. W. McCallum
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  9. H. Maletta
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  10. H. Blank
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  11. H. Mutka
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  12. R. Osborn
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  13. M. Arai
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  14. Z. Bowden
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  15. A. D. Taylor
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Allenspach, P., Mesot, J., Staub, U. et al. Magnetic properties of Nd3+ in Nd−Ba−Cu−O-compounds. Z. Physik B - Condensed Matter 95, 301–310 (1994). https://doi.org/10.1007/BF01343957

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  • DOI: https://doi.org/10.1007/BF01343957

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