同时增强强制性和和磁化在高性能异性热 NdFeB 厚薄膜中的 Dy 扩散层
Zhixing Ye1,2, Xiaotian Zhao1, Long Liu1
1Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China. xtzhao@imr.ac.cn.
Nanoscale
|November 13, 2023
概括
在-铁- (NdFeB) 厚膜中添加 (Dy) 意外地增强了磁化和强制性. 这项研究揭示了一种用于微电子机械系统的高性能NdFeB薄膜的新方法.
科学领域:
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
- 纳米技术纳米技术
背景情况:
- 铁 (NdFeB) 薄膜是重要的磁性材料.
- (Dy) 的添加通常会减少NdFeB中由于反铁磁合而导致的磁化.
- 优化 NdFeB 厚薄膜中的 Dy 含量是先进应用的关键.
研究的目的:
- 为了研究不同Dy含量的NdFeB厚薄膜中异常磁性特性变化.
- 了解微观结构的演变及其对磁性能的影响.
- 开发一种方法来制备用于微电子机械系统的高性能NdFeB厚薄膜.
主要方法:
- 制造 NdFeB 厚薄膜,具有受控 Dy 扩散层.
- 在扩散层中Dy比率的系统变化.
- 使用先进的成像技术进行微结构分析.
- 测量磁性特性,包括和磁化,残余磁化和强制性.
主要成果:
- 异常增强和磁化与增加Dy比.
- 强制性和残余磁化显著增加,归因于谷物脱和钉钉.
- 由于化过程中的Dy-Nd相互作用,形成了带有球形Nd2Fe14B粒的分层结构.
- 获得了28.7微米的异性 NdFeB 厚膜,其强迫力为2.46 T,表面电场为163 Oe.
结论:
- 该研究建立了 NdFeB 厚薄膜的微尺度生长模型.
- 优化的Dy扩散增强了超出传统预期的磁性.
- 开发的方法使得能够制备适合微电子机械系统的高性能NdFeB厚薄膜.
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