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Antiferromagnetic behavior in Y–Ba–(Cu1−xScx)–O

Published online by Cambridge University Press:  31 January 2011

A. Chakraborty ,
X. D. Chen ,
F. Zuo ,
B. R. Patton ,
J. R. Gaines  and
A. J. Epstein
A. Chakraborty
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106
X. D. Chen
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106
F. Zuo
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106
B. R. Patton
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106
J. R. Gaines*
Affiliation:
Department of Physics, The Ohio State University, Columbus, Ohio 43210-1106
A. J. Epstein
Affiliation:
Department of Physics and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210-1106
*
a)Permanent address: Department of Physics, University of Hawaii, Honolulu, Hawaii 96822.
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Abstract

We report the results on x-ray diffraction and magnetic susceptibility study of Y–Ba–(Cu1−xScx)–O. The materials were prepared in a stoichiometry corresponding to Y1Ba2(Cu1−xScx)3O7. Although x-ray analysis reveals the increasing presence of a subtle second phase with increasing Sc content, the superconducting transition temperature and resistivity did not change substantially in the composition range 0.0  x ≤ 0.15. In contrast, the magnetic susceptibility studies showed dramatic changes. Although Sc3+ has no spin by itself, an enhanced paramagnetic Curie susceptibility was observed above Tc with a moment of 1.5 μB per Sc. At 16 K a sharp cusp is observed in the temperature dependent susceptibility corresponding to the onset of a three-dimensionally ordered antiferromagnetic state. These results are discussed in terms of an additional previously unreported phase of Y–Ba–(Cu–Sc)–O that has an antiferromagnetic Néel temperature of 16 K. For composition of x = 1.0, a new phase is formed which is nonmagnetic.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 4 , Issue 3 , June 1989 , pp. 467 - 469
Copyright
Copyright © Materials Research Society 1989

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