一项关于易平面FeSi3.5复合材料的研究,在MHz频段具有高透性和超低损失
Peng Wu1, Shengyu Yang1, Yuandong Huang1
1Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Institute of Applied Magnetism, Lanzhou University, Lanzhou 730030, China.
Materials (Basel, Switzerland)
|July 29, 2023
概括
一种易平面FeSi3.5复合材料通过降低多余损耗,显著减少MHz频率的磁性材料损失. 这一进步使磁器件能够在更高的频率上有效运行,从而提高性能.
科学领域:
- 材料科学 材料科学 材料科学
- 电磁主义 电磁主义
- 物理 物理学 物理
背景情况:
- 磁性材料经常在MHz频率下失效,原因是由于过热导致过度损失增加而导致的过热.
- 软磁性复合材料对于高频应用至关重要,但它们的性能受到能量损失的限制.
研究的目的:
- 为了研究MHz频率的轻平面FeSi3.5复合材料的超低损失特性.
- 确定在MHz运行的磁性材料中损失的主要原因,并证明易平面复合材料在减轻这些损失方面的有效性.
主要方法:
- 易平面和非易平面FeSi3.5复合材料的制造和表征.
- 测量和分离磁性损失组件 (hysteresis,流,过量损失).
- 评估磁性,包括透性和铁磁共振频率.
主要成果:
- 易平面的FeSi3.5复合材料表现出极低的总损耗 (372.88 kW/m3在10 MHz,4 mT).
- 过度损耗被确定为非易平面复合材料 (80%以上) 中的主导损耗组成部分.
- 简单平面处理显著降低了总损耗 (从2785.8到500.42千瓦/立方米3在3MHz,8mT) 和过剩损耗 (91.58%).
结论:
- 简单平面处理大大减少了多余损失,这是MHz磁性材料过热的主要原因.
- 开发的易平面FeSi3.5复合材料表现出优良的磁性,使其适用于高频应用.
- 这种材料使MHz频段及以上磁性设备可靠运行.
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