Interaction between intragrain currents and current in bulk YBaCuO

A.R. Kuper, H. Hemmes, H. Rogalla

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Abstract

The hysteric magnetization curves of transport and grain currents are measured for a ring shaped sample by applying an a.c. magnetic field and using pickup coils. The dependence of the magnetization curves on the amplitude of the applied a.c. magnetic field can be explained by a simple model. This model takes into account the time dependence of the transport and the intra-grain current. We will show that the mutual interaction of the grain and transport currents cannot be neglected in our samples. At first the influence of an additional d.c. background field on the transport current seems quite unexpected, but this d.c. field dependence can be interpreted too within our model.
Original languageEnglish
Pages (from-to)1027-1033
Number of pages7
JournalCryogenics
Volume32
Issue number11
DOIs
Publication statusPublished - 1992

Keywords

  • Bulk YBaCuO
  • Magnetization
  • Inter- and intra-grain currents

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