Critical current density and magnetic phase diagrams in Nb-Ti superconducting wires with artificial pinning centers

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

doi:10.2320/jinstmet1952.61.9_785

Critical current density and magnetic phase diagrams in Nb-Ti superconducting wires with artificial pinning centers

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

Applied Energy Engineering

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

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Abstract

Critical current densities (J_c) due to artificially designed pinning structure composed of randomly oriented Nb/Nb-Ti or Ti/Nb-Ti multilayer clusters in Nb-Ti superconducting wires are investigated in terms of recent works on magnetic phase diagrams of the metallic superconducting multilayer system. Upper critical field (B_c2)-temperature curves of the Nb-Ti superconducting wires with artificial pinning structures have an anomalous upturn of B_c2. This behavior is similar to the dimensional crossover which occurs in the superconducting multilayer system. From J_c and anomalous B_c2 properties in the Nb-Ti superconducting wires with artificial pinning strutures, we propose the flux pinning mechanism of these systems, especially in the high field region at 4.2 K.

Original language	English
Pages (from-to)	785-791
Number of pages	7
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	61
Issue number	9
DOIs	https://doi.org/10.2320/jinstmet1952.61.9_785
Publication status	Published - 1997

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.2320/jinstmet1952.61.9_785

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abstract = "Critical current densities (Jc) due to artificially designed pinning structure composed of randomly oriented Nb/Nb-Ti or Ti/Nb-Ti multilayer clusters in Nb-Ti superconducting wires are investigated in terms of recent works on magnetic phase diagrams of the metallic superconducting multilayer system. Upper critical field (Bc2)-temperature curves of the Nb-Ti superconducting wires with artificial pinning structures have an anomalous upturn of Bc2. This behavior is similar to the dimensional crossover which occurs in the superconducting multilayer system. From Jc and anomalous Bc2 properties in the Nb-Ti superconducting wires with artificial pinning strutures, we propose the flux pinning mechanism of these systems, especially in the high field region at 4.2 K.",

author = "Kaname Matsumoto and Yasuzo Tanaka and Osuke Miura and Masataka Iwakuma and Kazuo Funaki and Kaoru Yamafuji and Teruo Matsushita",

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T1 - Critical current density and magnetic phase diagrams in Nb-Ti superconducting wires with artificial pinning centers

AU - Matsumoto, Kaname

AU - Tanaka, Yasuzo

AU - Miura, Osuke

AU - Iwakuma, Masataka

AU - Funaki, Kazuo

AU - Yamafuji, Kaoru

AU - Matsushita, Teruo

PY - 1997

Y1 - 1997

N2 - Critical current densities (Jc) due to artificially designed pinning structure composed of randomly oriented Nb/Nb-Ti or Ti/Nb-Ti multilayer clusters in Nb-Ti superconducting wires are investigated in terms of recent works on magnetic phase diagrams of the metallic superconducting multilayer system. Upper critical field (Bc2)-temperature curves of the Nb-Ti superconducting wires with artificial pinning structures have an anomalous upturn of Bc2. This behavior is similar to the dimensional crossover which occurs in the superconducting multilayer system. From Jc and anomalous Bc2 properties in the Nb-Ti superconducting wires with artificial pinning strutures, we propose the flux pinning mechanism of these systems, especially in the high field region at 4.2 K.

AB - Critical current densities (Jc) due to artificially designed pinning structure composed of randomly oriented Nb/Nb-Ti or Ti/Nb-Ti multilayer clusters in Nb-Ti superconducting wires are investigated in terms of recent works on magnetic phase diagrams of the metallic superconducting multilayer system. Upper critical field (Bc2)-temperature curves of the Nb-Ti superconducting wires with artificial pinning structures have an anomalous upturn of Bc2. This behavior is similar to the dimensional crossover which occurs in the superconducting multilayer system. From Jc and anomalous Bc2 properties in the Nb-Ti superconducting wires with artificial pinning strutures, we propose the flux pinning mechanism of these systems, especially in the high field region at 4.2 K.

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Critical current density and magnetic phase diagrams in Nb-Ti superconducting wires with artificial pinning centers

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