Fabrication of binary FeSe superconducting wires by novel diffusion process

Toshinori Ozaki; Keita Deguchi; Yoshikazu Mizuguchi; Yasuna Kawasaki; Takayoshi Tanaka; Takahide Yamaguchi; Hiroaki Kumakura; Yoshihiko Takano

doi:10.1063/1.4726243

arXiv · 1103.3602

Fabrication of binary FeSe superconducting wires by novel diffusion process

Toshinori Ozaki·Keita Deguchi·Yoshikazu Mizuguchi·Yasuna Kawasaki·Takayoshi Tanaka·Takahide Yamaguchi·Hiroaki Kumakura·Yoshihiko Takano

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Abstract

We report successful fabrication of multi- and mono-core FeSe wires with high transport critical current density Jc using a simple in-situ Fe-diffusion process based on the powder-in-tube (Fe-diffusion PIT) method. The seven-core wire showed transport Jc of as high as 1027 A/cm2 at 4.2 K. The superconducting transition temperature Tczero was observed at 10.5 K in the wire-samples, which is about 2 K higher than that of bulk FeSe. The Fe-diffusion PIT method is suitable for fabricating multi-core wires of the binary FeSe superconductors with superior properties.

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Toshinori Ozaki, Keita Deguchi, Yoshikazu Mizuguchi, Yasuna Kawasaki, Takayoshi Tanaka, Takahide Yamaguchi, Hiroaki Kumakura, Yoshihiko Takano. 2012-06-16. Fabrication of binary FeSe superconducting wires by novel diffusion process. https://doi.org/10.1063/1.4726243

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