Enhanced Jc properties in superconducting NbTi composites by introducing Nb artificial pins with a layered structure

Kaname Matsumoto; Hirokazu Takewaki; Yasuzo Tanaka; Osuke Miura; Kaoru Yamafuji; Kazuo Funaki; Masataka Iwakuma; Teruo Matsushita

doi:10.1063/1.110896

Enhanced J_c properties in superconducting NbTi composites by introducing Nb artificial pins with a layered structure

Kaname Matsumoto, Hirokazu Takewaki, Yasuzo Tanaka, Osuke Miura, Kaoru Yamafuji, Kazuo Funaki, Masataka Iwakuma, Teruo Matsushita

Applied Energy Engineering

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

43 Citations (Scopus)

Abstract

High critical current densities (4250 A/mm² at 5 T, 4.2 K, and 15 000 A/mm² at 2 T, 4.2 K) were achieved by using an artificially designed pin structure composed of randomly oriented clusters of Nb/NbTi multilayer in a NbTi composite superconductor (with a round cross section). The maximum values were obtained when the Nb layer thickness was designed to be approximately twice the coherence length in NbTi, where the layer thickness is five to ten times thicker than that of the optimized α-Ti ribbon thickness in a conventional NbTi system.

Original language	English
Pages (from-to)	115-117
Number of pages	3
Journal	Applied Physics Letters
Volume	64
Issue number	1
DOIs	https://doi.org/10.1063/1.110896
Publication status	Published - 1994

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.110896

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abstract = "High critical current densities (4250 A/mm2 at 5 T, 4.2 K, and 15 000 A/mm2 at 2 T, 4.2 K) were achieved by using an artificially designed pin structure composed of randomly oriented clusters of Nb/NbTi multilayer in a NbTi composite superconductor (with a round cross section). The maximum values were obtained when the Nb layer thickness was designed to be approximately twice the coherence length in NbTi, where the layer thickness is five to ten times thicker than that of the optimized α-Ti ribbon thickness in a conventional NbTi system.",

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AU - Matsumoto, Kaname

AU - Takewaki, Hirokazu

AU - Tanaka, Yasuzo

AU - Miura, Osuke

AU - Yamafuji, Kaoru

AU - Funaki, Kazuo

AU - Iwakuma, Masataka

AU - Matsushita, Teruo

PY - 1994

Y1 - 1994

N2 - High critical current densities (4250 A/mm2 at 5 T, 4.2 K, and 15 000 A/mm2 at 2 T, 4.2 K) were achieved by using an artificially designed pin structure composed of randomly oriented clusters of Nb/NbTi multilayer in a NbTi composite superconductor (with a round cross section). The maximum values were obtained when the Nb layer thickness was designed to be approximately twice the coherence length in NbTi, where the layer thickness is five to ten times thicker than that of the optimized α-Ti ribbon thickness in a conventional NbTi system.

AB - High critical current densities (4250 A/mm2 at 5 T, 4.2 K, and 15 000 A/mm2 at 2 T, 4.2 K) were achieved by using an artificially designed pin structure composed of randomly oriented clusters of Nb/NbTi multilayer in a NbTi composite superconductor (with a round cross section). The maximum values were obtained when the Nb layer thickness was designed to be approximately twice the coherence length in NbTi, where the layer thickness is five to ten times thicker than that of the optimized α-Ti ribbon thickness in a conventional NbTi system.

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Enhanced J_c properties in superconducting NbTi composites by introducing Nb artificial pins with a layered structure

Abstract

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