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首页> 外文期刊>Journal of Applied Physics >Influence of reactivity of sheath materials with Mg/B on superconducting properties of MgB_2
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Influence of reactivity of sheath materials with Mg/B on superconducting properties of MgB_2

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摘要

We investigated the influence of reactivity of commonly used sheath materials (Fe, SS, Cu, and Ni) with Mg/B, processed by in situ powder in sealed tube method on superconducting properties of MgB_2. X-ray diffraction characterization of samples yields quantitative data of the volume fraction of MgB_2 core, whereas magnetic measurements show the influence of added sheath materials on T_c J_c(H), H_(irr), and flux pinning behavior of MgB_2. Our comparative study gives better phase purity, J_C(H) characteristics, and flux pinning behavior for Fe and SS added samples, which shows the suitability of Fe and SS as sheath materials in MgB_2 wire/tape fabrication.

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