Reduced filament coupling in Bi(2223)/BaZrO3/Ag composite tapes

被引：30

作者：

Dhallé, M

Polcari, A

Marti, F

Witz, G

Huang, YB

Flükiger, R

Clerc, S

Kwasnitza, K

机构：

[1] Univ Geneva, Dept Phys Mat Condensee, CH-1211 Geneva, Switzerland

[2] Paul Scherrer Inst, CH-5323 Villigen, Switzerland

来源：

PHYSICA C | 1998年 / 310卷 / 1-4期

关键词：

transport AC loss; Bi-2223; tape; resistive barrier; twist; filament geometry; coupling current; BaZrO3;

D O I：

10.1016/S0921-4534(98)00447-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Multifilamentary Bi(2223)/Ag tapes often exhibit AC loss levels comparable to those measured in monofilamentary samples, which is partly due to the large coupling currents induced in the low resistive sheath material. Surrounding the individual filaments by electrically insulating barrier layers suppresses these currents and strongly reduces the coupling. We demonstrate this effect with various types of magnetic and self-field AC loss measurements on a series of Bi(3223)/BaZrO3/Ag tapes. We also discuss the influence of barrier thickness, twist pitch length and filament arrangement on the measured losses in these composite conductors. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：127 / 131

页数：5

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