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Melt-textured YBaCuO with High Trapped Fields up to 1.3 T at 77 K

Published online by Cambridge University Press:  31 January 2011

H. Walter ,
M. P. Delamare ,
B. Bringmann ,
A. Leenders  and
H. C. Freyhardt
H. Walter
Affiliation:
Zentrum für Funktionwerkstoffe Göttingen GmbH, Windausweg 2, 37073 Göttingen, Germany
M. P. Delamare
Affiliation:
Institut für Materialphysik, Universität Göttinger, Hospitalstrasse 3-7, 37073 Göttingen, Germany
B. Bringmann
Affiliation:
Institut für Materialphysik, Universität Göttinger, Hospitalstrasse 3-7, 37073 Göttingen, Germany
A. Leenders
Affiliation:
Zentrum für Funktionwerkstoffe Göttingen GmbH, Windausweg 2, 37073 Göttingen, Germany, and Institut für Materialphysik, Universität Göttingen, Hospitalstrasse 3-7, 37073 Göttingen, Germany
H. C. Freyhardt
Affiliation:
Zentrum für Funktionwerkstoffe Göttingen GmbH, Windausweg 2, 37073 Göttingen, Germany, and Institut für Materialphysik, Universität Göttingen, Hospitalstrasse 3-7, 37073 Göttingen, Germany
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Abstract

CeO2-doped YBaCuO monoliths synthesized with a top-seeded melt growth process in a conventional box furnace exhibited values of trapped magnetic field of up to 1.33 T at 77 K. To our knowledge, this is the highest value of trapped field reported for a melt-textured YBaCuO monolith. A suitable temperature profile and the use of high-density Y2BaCuO5 substrates led to reproducible single-domain crack-free samples investigated by optical and scanning electron microscopy and trapped field measurements. The zero-field-cooled levitation forces at 77 K of standard samples amounted to 70–83 N. A transport critical current density of up to 1.3 × 105 A/cm2 in self field at 77 K was obtained.

Type
Rapid Communications
Information
Journal of Materials Research , Volume 15 , Issue 6 , June 2000 , pp. 1231 - 1234
Copyright
Copyright © Materials Research Society 2000

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