脱磁参数 基于无歇斯底里磁化曲线的磁盾的评估
Jianzhi Yang1,2, Minxia Shi1,2, Xu Zhang1,2
1Institute of Large-Scale Scientific Facility and Centre for Zero Magnetic Field Science, Beihang University, Beijing 100191, China.
Materials (Basel, Switzerland)
|August 12, 2023
概括
优化去磁化场参数对于高性能磁性屏蔽至关重要. 这项研究引入了一个新的标准和动态的吉尔斯-阿瑟顿模型来评估去磁化,提高磁屏蔽的有效性.
科学领域:
- 材料科学 材料科学 材料科学
- 电磁主义 电磁主义
- 应用物理 应用物理
背景情况:
- 脱磁对于高透性磁盾来说至关重要,以实现接近零的磁场和最佳的屏蔽性能.
- 不适当的去磁场参数可能导致磁化状态偏离理想的无歇斯底里曲线,降低屏蔽效率.
- 达到无歇斯底里状态最大限度地提高了材料的透性,提高了磁屏蔽的有效性.
研究的目的:
- 提出一种新的评估标准,用于评估磁屏蔽中的脱磁场参数.
- 分析不同去磁化参数对屏蔽材料最终磁化状态的影响.
- 为了将去磁化参数与机型磁屏蔽房间 (MSR) 的静态磁屏蔽性能相关联.
主要方法:
- 使用动态吉尔斯-阿瑟顿 (J-A) 模型在各种脱磁条件下计算磁化状态.
- 研究初始振幅,频率,周期数和外衰减函数对去磁化的影响.
- 在不同的去磁化参数下测量和比较磁化曲线.
- 评估最终的磁化状态与理论无歇斯底里状态的对比.
主要成果:
- 较低的频率,适当的振幅,足够的周期数,以及对数封面衰减函数,导致磁化状态更接近理想的无歇斯底里值.
- 该研究确定了最佳的去磁化参数,以最大限度地减少从理论无歇斯底里磁化曲线的偏差.
- 脱磁参数的优化直接与展位型MSR中改进的静电磁屏蔽性能相关.
结论:
- 拟议的评估标准有效地评估了用于磁屏蔽应用的脱磁场参数.
- 通过J-A模型和实验验证识别的优化去磁化参数显著提高了磁屏蔽性能.
- 这项研究为通过完善去磁化过程来改进磁盾的设计和有效性提供了一条途径.
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