Absorption at radio frequencies in superconducting Y1Ba2Cu3Oy

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Publication Type Journal Article
School or College College of Science
Department Physics
Creator Symko, Orest George
Other Author Ducharme, Steven; Durny, R.; Hautala, J.; Zheng, D. J.; Taylor, P. C.; Kulkarni, S.
Title Absorption at radio frequencies in superconducting Y1Ba2Cu3Oy
Date 1989
Description The large magnetic-field-dependent ac absorption in superconducting Y1Ba2Cu3Oy ceramics and powders decreases slowly with increasing frequency in the range 2-16 MHz. The magnetic-field-dependent ac absorption is observed below Tc in superconducting Y1Ba2Cu3Oy ceramics, powders and twinned crystals and in (La,Sr) 2Cu04 and BaPbc.75Bi 025CuO3 powders and appears to contain distinct contributions from trapped flux and/or intragrain tunnel junctions and from ordinary superconductor surface impedance. The contribution from trapped flux and/or intragrain tunnel junctions is important in dc magnetic fields of up to approximately 20 G at all temperatures below Tc. There is an identifiable modulated ac absorption which changes slowly over more than 12 kG at low temperatures and which we propose is primarily caused by the ac surface impedance with possible contributions from the critical state. A twinned crystal of Y1Ba2Cu30y exhibits the same ac absorption except that it has an anisotropic dependence on the applied dc magnetic field.
Type Text
Publisher American Institute of Physics (AIP)
Journal Title Journal of Applied Physics
Volume 66
Issue 3
First Page 1252
Last Page 1260
DOI 10.1063/1.344450
citatation_issn 218979
Subject Copper-octahedral oxygen perovskites; Superconducting Y1Ba 2Cu3Oy; ac absorption
Subject LCSH Superconductors
Language eng
Bibliographic Citation Ducharme, S., Durny, R., Hautala, J., Zheng, D. J., Taylor, P. C., Symko, O. G., & Kulkarni, S. (1989). Absorption at radio frequencies in superconducting Y1Ba2Cu3Oy. Journal of Applied Physics, 66(3), 1252-60.
Rights Management (c)American Institute of Physics. The following article appeared in Ducharme, S., Durny, R., Hautala, J., Zheng, D. J., Taylor, P. C., Symko, O. G., & Kulkarni, S., Journal of Applied Physics, 66(3) 1989 and may be found at http://dx.doi.org/10.1063/1.344450
Format Medium application/pdf
Format Extent 1,541,720 bytes
Identifier ir-main,11130
ARK ark:/87278/s6640787
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 706380
Reference URL https://collections.lib.utah.edu/ark:/87278/s6640787
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