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Magnetic and electronic properties of M-Ba-Cu-O (M : Y, Er, Eu)

Jenny, H. ; Walz, B. ; Leeman, G. ; Geiser, V. ; Jost, S. ; Frey, T. ; Güntherodt, H.-J

In: Journal of Materials Research, 1987, vol. 2, no. 6, p. 775-778

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    Titre
    • Magnetic and electronic properties of M-Ba-Cu-O (M
      Y, Er, Eu)
    Auteur
    • Jenny, H.. Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
    • Walz, B.. Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
    • Leeman, G.. Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
    • Geiser, V.. Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
    • Jost, S.. Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
    • Frey, T.. Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
    • Güntherodt, H.-J. Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Journal of Materials Research, 1987, vol. 2, no. 6, p. 775-778. Cambridge University Press
    Autre version électronique
    Classification
    • Santé
    Identifiant OAI-PMH
    • oai:doc.rero.ch:290250
    Summary
    Various high-Tc superconductors of the La-(Ba,Sr)-Cu-O and the M-Ba-Cu-O systems with M = Y, Er, and Eu have been prepared by the solid-state reaction method. Single-phase samples with no additional diffraction peaks as verified by x-ray diffraction (XRD) measurements have been obtained. Measurements of the electrical resistivity and of the magnetization showed sharp superconducting transitions with a width of 1 K. The measurements of the magnetic susceptibility have been extended above room temperature up to 770 K. There is clear evidence for the formation of a magnetic moment in all M-Ba-Cu-O samples. Monochromated x-ray photoelectron spectroscopy (MXPS) valence band and x-ray photoelectron spectroscopy (XPS) core level spectra have been measured on various samples at room temperature and at liquid nitrogen temperature