AC losses in multifilamentary Bi(2223) tapes with an interfilamentary resistive carbonate barrier

For the most common AC application frequencies, the main component of the AC losses in multifilamentary Bi(2223) tapes are caused by hysteresis- and coupling losses. These losses can be reduced enhancing the matrix resistivity and applying a twist to the filaments. We report on the AC loss propertie...

Full description

Saved in:
Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 1998-12, Vol.310 (1), p.122-126
Main Authors: Eckelmann, H., Quilitz, M., Oomen, M., Leghissa, M., Goldacker, W.
Format: Article
Language:English
Subjects:
AgAu
Applied sciences
Bi-2223 tape
Electrical engineering. Electrical power engineering
Exact sciences and technology
Interfilamentary coupling
Magnetic AC loss
Materials
Resistive barriers
SrCO 3
Transport AC loss
Twist
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:For the most common AC application frequencies, the main component of the AC losses in multifilamentary Bi(2223) tapes are caused by hysteresis- and coupling losses. These losses can be reduced enhancing the matrix resistivity and applying a twist to the filaments. We report on the AC loss properties of 37-filament tapes with AgAu (8 wt.%) matrix, and novel 19-filament tapes with SrCO 3 barriers between the filaments. We performed transport AC loss and magnetic AC loss measurements in parallel and perpendicular magnetic fields. Both kinds of tapes were also prepared with filament twists below a twist pitch of 20 mm. The influence of the different tape modifications on the AC loss behaviour is presented and compared with theoretical models to understand the effect of the resistive matrix. In the case of magnetic AC loss measurements, reduced AC losses due to decoupled filaments were observed for the twisted tapes with a resistive matrix in low parallel fields.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(98)00446-8