Effect of V, Ir-Doping on the Jc Properties of Bi2223 Tapes

H. Maeda; K. Kakimoto; M. Kikuchi; Kazuo Watanabe

doi:10.1109/77.785004

Effect of V, Ir-Doping on the J_c Properties of Bi2223 Tapes

H. Maeda, K. Kakimoto, M. Kikuchi, Kazuo Watanabe

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We prepared Ag-sheathed mono-core tapes and multifilamentary tapes with 19 filaments by the powder-intube method, using V- and Ir- doped B12223 powder with a doping amount x less than 0.15. In the doped tapes two effects are overlapped: One is the decrease in J_c due to some weak links caused by precipitates such as Sr-V-O oxides, and the other is the increase in 3C with the doping content due to the enhancement of Bi2223 phase formation. This results in a minimum in J_c at x=0.05. The second effect becomes stronger in the V-doping, because of the great enhancement of Bi2223 phase formation. In the Ir-doped tapes the J_c values decrease monotonically with the doping content. For the multifilamentary tapes the V-doping is very effective to obtain high I_c values.

Original language	English
Pages (from-to)	2541-2544
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	9
Issue number	2 PART 2
DOIs	https://doi.org/10.1109/77.785004
Publication status	Published - 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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title = "Effect of V, Ir-Doping on the Jc Properties of Bi2223 Tapes",

abstract = "We prepared Ag-sheathed mono-core tapes and multifilamentary tapes with 19 filaments by the powder-intube method, using V- and Ir- doped B12223 powder with a doping amount x less than 0.15. In the doped tapes two effects are overlapped: One is the decrease in Jc due to some weak links caused by precipitates such as Sr-V-O oxides, and the other is the increase in 3C with the doping content due to the enhancement of Bi2223 phase formation. This results in a minimum in Jc at x=0.05. The second effect becomes stronger in the V-doping, because of the great enhancement of Bi2223 phase formation. In the Ir-doped tapes the Jc values decrease monotonically with the doping content. For the multifilamentary tapes the V-doping is very effective to obtain high Ic values.",

author = "H. Maeda and K. Kakimoto and M. Kikuchi and Kazuo Watanabe",

note = "Funding Information: The authors would like to thank Dr. P.X. Zhang and Dr. W.P. Chen for valuable discussions and Mr. Y . Murakami for assisting in the SEM and EDX analysis of the tapes. This work is supported in part by Grant-in-Aid for Scientific Research (A) No. 09355023; from the Ministry of Education, Science and Culture, Japan.",

year = "1999",

doi = "10.1109/77.785004",

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AU - Maeda, H.

AU - Kakimoto, K.

AU - Kikuchi, M.

AU - Watanabe, Kazuo

N1 - Funding Information: The authors would like to thank Dr. P.X. Zhang and Dr. W.P. Chen for valuable discussions and Mr. Y . Murakami for assisting in the SEM and EDX analysis of the tapes. This work is supported in part by Grant-in-Aid for Scientific Research (A) No. 09355023; from the Ministry of Education, Science and Culture, Japan.

PY - 1999

Y1 - 1999

N2 - We prepared Ag-sheathed mono-core tapes and multifilamentary tapes with 19 filaments by the powder-intube method, using V- and Ir- doped B12223 powder with a doping amount x less than 0.15. In the doped tapes two effects are overlapped: One is the decrease in Jc due to some weak links caused by precipitates such as Sr-V-O oxides, and the other is the increase in 3C with the doping content due to the enhancement of Bi2223 phase formation. This results in a minimum in Jc at x=0.05. The second effect becomes stronger in the V-doping, because of the great enhancement of Bi2223 phase formation. In the Ir-doped tapes the Jc values decrease monotonically with the doping content. For the multifilamentary tapes the V-doping is very effective to obtain high Ic values.

AB - We prepared Ag-sheathed mono-core tapes and multifilamentary tapes with 19 filaments by the powder-intube method, using V- and Ir- doped B12223 powder with a doping amount x less than 0.15. In the doped tapes two effects are overlapped: One is the decrease in Jc due to some weak links caused by precipitates such as Sr-V-O oxides, and the other is the increase in 3C with the doping content due to the enhancement of Bi2223 phase formation. This results in a minimum in Jc at x=0.05. The second effect becomes stronger in the V-doping, because of the great enhancement of Bi2223 phase formation. In the Ir-doped tapes the Jc values decrease monotonically with the doping content. For the multifilamentary tapes the V-doping is very effective to obtain high Ic values.

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

IS - 2 PART 2

ER -

Effect of V, Ir-Doping on the J_c Properties of Bi2223 Tapes

Abstract

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