@article{oai:repo.lib.tut.ac.jp:00001559,
 author = {牧原, 知秀 and 稲田, 亮史 and 太田, 昭男 and 坂元, 周作 and 李, 成山 and 張, 平祥 and Makihara, Tomohide and Inada, Ryoji and Oota, Akio and Sakamoto, Shusaku and Li, Chengshan and Zhang, Pingxiang},
 issue = {3},
 journal = {IEEE Transactions on Applied Superconductivity},
 month = {Jun},
 note = {For AC loss reduction in Bi2223 tapes subjected to
an AC external magnetic field, twisting the superconducting
filaments and/or introducing oxide layers as highly resistive
barriers around each filament are required. However, the
structure of barrier tape becomes very complex and longitudinal
uniformity of both transport property and tape structure could be
easily deteriorated. To improve the current transport capability
and its longitudinal uniformity for barrier tape for AC use, simple
and non-destructive techniques to characterize them should be
indispensable. In this paper, we examined the self-field
distributions for Bi2223 tapes with oxide barriers carrying DC
transport current by a scanning Hall-probe microscopy (SHM).
Non-twisted and twisted 19-filamentary tapes with SrZrO3 +
Bi2212 barriers were prepared by powder-in-tube process. The
distributions of self-field in perpendicular to the broader face of a
tape carrying DC current below critical current Ic was measured
at 77 K by SHM with an active area of 50 μm × 50 μm, at 0.5 mm
away from the tape surface. Based on the measured self-field
distributions, longitudinal non-uniformity of transport properties
and the presence of local defects to obstruct the current transport
in barrier tapes were investigated.},
 pages = {2820--2823},
 title = {Evaluation of Self-Field Distributions for Bi2223 Tapes With Oxide Barriers Carrying DC Transport Current},
 volume = {21},
 year = {2011}
}