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

Published online by Cambridge University Press:  31 January 2011

H. Jenny ,
B. Walz ,
G. Leeman ,
V. Geiser ,
S. Jost ,
T. Frey  and
H.-J. Güntherodt
H. Jenny
Affiliation:
Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
B. Walz
Affiliation:
Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
G. Leeman
Affiliation:
Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
V. Geiser
Affiliation:
Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
S. Jost
Affiliation:
Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
T. Frey
Affiliation:
Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
H.-J. Güntherodt
Affiliation:
Institut für Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland
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Abstract

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.

Type
Articles
Information
Journal of Materials Research , Volume 2 , Issue 6 , December 1987 , pp. 775 - 778
Copyright
Copyright © Materials Research Society 1987

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References

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