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Автор A A Zhukov
Автор W Jahn
Автор B Runtsch
Автор H Kupfer
Автор Y Yamada
Автор R Flukiger
Дата выпуска 1992-04-01
dc.description Magnetic and transport properties of textured Bi(2223) tape with high critical transport current density (j<sub>c</sub>(77 K, 0 T)=2.8*10<sup>4</sup> A cm<sup>-2</sup>) were studied. Magnetic measurements show nongranular behaviour of shielding and transport currents for the magnetic field orientation perpendicular to the tape plane B perpendicular to p at low temperatures and low fields. At high magnetic fields and temperatures, however, quite large differences were observed, which depend on magnetic field sweep rate B and voltage criteria E<sub>c</sub>. This is connected with granularity and inhomogeneity of the current flow. It was established that the magnetic field dependence of the critical current has a general scaling behaviour: j<sub>c</sub>(B, B, T)=j<sub>c</sub>(0, B, T) f(B/B<sub>0</sub>(B, T)) where the scaling function f becomes exp(-B/B<sub>0</sub>) for B/B<sub>0</sub>>or=1. The scaling parameter B<sub>0</sub> is proportional to the irreversibility field B<sub>irr</sub>. Both B<sub>0</sub> and B<sub>irr</sub> show an exponential temperature dependence.
Формат application.pdf
Издатель Institute of Physics Publishing
Название Transport currents and magnetic properties of textured Bi(2223) tape
Тип paper
DOI 10.1088/0953-2048/5/4/011
Electronic ISSN 1361-6668
Print ISSN 0953-2048
Журнал Superconductor Science and Technology
Том 5
Первая страница 262
Последняя страница 268
Аффилиация A A Zhukov; Dept. of Phys., Moscow State Univ., Russia
Аффилиация W Jahn; Dept. of Phys., Moscow State Univ., Russia
Аффилиация B Runtsch; Dept. of Phys., Moscow State Univ., Russia
Аффилиация H Kupfer; Dept. of Phys., Moscow State Univ., Russia
Аффилиация Y Yamada; Dept. of Phys., Moscow State Univ., Russia
Аффилиация R Flukiger; Dept. of Phys., Moscow State Univ., Russia
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