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arXiv · 1106.3891

Evolution of tetragonal phase in the FeSe wire fabricated by a novel chemical-transformation PIT process

Hiroki Izawa·Yoshikazu Mizuguchi·Toshinori Ozaki·Yoshihiko Takano·Osuke Miura
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Abstract

We fabricated superconducting FeSe wires by the chemical-transformation PIT process. The obvious correlation between annealing temperature and phase transformation was observed. Annealing above 500^{\circ}C produced wire-core transformation from hexagonal to tetragonal phase. Furthermore the hexagonal phase completely transformed into the tetragonal phase by annealing at 1000^{\circ}C. With increasing annealing temperature, the superconducting property was dramatically improved, associated with the evolution of the tetragonal phase.

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Hiroki Izawa, Yoshikazu Mizuguchi, Toshinori Ozaki, Yoshihiko Takano, Osuke Miura. 2011-06-20. Evolution of tetragonal phase in the FeSe wire fabricated by a novel chemical-transformation PIT process. https://doi.org/10.1143/jjap.51.010101

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