计算临界电流密度的方程 使用豆子模型与自相一致的磁性单位来防止单位转换错误
Massimiliano Polichetti1, Armando Galluzzi1, Rohit Kumar2
1Laboratory "LAMBDA" for Analysis of Materials Behaviour in DC and AC Fields, Department of Physics "E.R. Caianiello", University of Salerno and CNR-SPIN Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, SA, Italy.
Materials (Basel, Switzerland)
|January 25, 2025
概括
本研究引入了一个单一的方程,使用Bean的模型准确计算临界电流密度 (J),解决各种公式和单位造成的混乱. 这确保了精确的J估计,防止了科学文献中的重大错误.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 超导电性 超导电性 超导电性
背景情况:
- 比恩的临界状态模型被广泛用于估计临界电流密度 (J).
- 对于J计算的现有方程通常会导致由于不一致的磁单位和前因子而导致混乱和错误.
- 报告的J值的差异可能是显著的,有时会有数量级的差异.
研究的目的:
- 提出一个单一的,使用Bean模型在矩形样本中计算临界电流密度 (J) 的通用方程.
- 为了澄清磁性单位和预因子对J计算的影响.
- 解决模两可的问题,防止在报告临界电流密度时出现错误.
主要方法:
- 基于Bean模型对临界电流密度 (J) 的现有方程的分析.
- 为J计算制定一个单一的,无维的通用方程.
- 建议的一般方程与使用不同单位系统的文献报告的表达式进行比较.
主要成果:
- 为计算临界电流密度 (J) 提出了一个单一的无维一般方程.
- 拟议的方程简化了J计算,允许在不改变核心公式的情况下进行单位转换.
- 使用一般方程进行的计算产生了准确的J值,与其他方法可能出现的错误结果形成鲜明对比.
结论:
- 提出的一般方程消除了临界电流密度 (J) 计算中的模两可.
- 精确的J测定对于推进超导研究和应用至关重要.
- 这项工作确保了正确的维度分析,并防止错误在现场传播.
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