大量Nb1-βSnβ超导体的固体测量通过弧形化合成的超导体
Mahboobeh Shahbazi1,2, Henrietta E Cathey3, Ali Dehghan Manshadi4
1Centre for Materials Science and School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia.
Materials (Basel, Switzerland)
|July 12, 2025
概括
这项研究引入了一种改进的生产-锡 (Nb1-βSnβ) 超导体的方法. 优化化显著提高了这些先进的超导材料的临界电流密度 (Jc).
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 超导电性 超导电性 超导电性
背景情况:
- -锡 (Nb1-βSnβ) 阶段是至关重要的超导材料.
- 高性能Nb1-βSnβ散装的生产需要优化加工.
- 弧形化是一种常见的,但可以改进的Nb1-βSnβ生产方法.
研究的目的:
- 开发一种替代的,优化的工艺,用于大量生产Nb1-βSnβ超导相.
- 研究处理前后对Nb1-βSnβ的超导特性的影响.
- 通过可控回火,增强Nb1-β-Snβ的临界电流密度 (Jc).
主要方法:
- 序列烧结,弧度化和Nb + Sn条的处理后化.
- 磁化测量以确定超导特性,包括临界电流密度 (Jc).
- 微观结构分析以评估粒度大小,方向和结中心特征.
主要成果:
- 在900°C进行3小时的优化火过程,显著增加了Jc到6.16 × 104 A/cm2,在10K和0.2T时.
- 低温烧结 (720°C) 和短时间 (<10小时) 的回火 (900°C) 产生了最佳的粒度结构.
- 在更高的温度或更长的时间下加工导致了谷物生长的增加,并减少了钉钉中心.
结论:
- 开发的治疗前后处理过程提供了一条可行的途径,以可调节的静脉测量来实现密集的,大量的Nb1-βSnβ.
- 优化化对于通过控制微观结构和创建有效的固定中心来增强Jc至关重要.
- 对化参数 (3h < tpost < 60h, 900 °C1000 °C) 的进一步研究可以进一步完善静态测量和微观结构控制.
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