作为IrMn的替代品,朝着MnN发展
William Frost1, Fatimah Alsaud2, Robert A Lawrence2
1School of Physics, Engineering and Technology, University of York, Heslington, YO10 5DD, UK. william.frost@york.ac.uk.
Scientific reports
|September 20, 2024
概括
研究人员使用种子层开发了一种新的抗铁磁材料,克服了以前对合金替代品的局限性. 这一进步为高温应用提供了一个有希望的,具有成本效益的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 固态物理 固态物理
- 这就是Spintronics.
背景情况:
- 由于的成本和稀缺性,在反铁磁自旋电子装置中急需替代- (IrMn) 合金.
- 在 (Ta) 种子层上的化 (MnN) 已被探索为潜在的替代品,但面临着低异构和扩散的挑战.
研究的目的:
- 为了解决MnN/Ta在高温反铁磁应用中的局限性.
- 研究使用 (W) 种子层来改善MnN的性能和性能.
主要方法:
- 使用W种子层而不是Ta制造MnN薄膜.
- 结构性质的表征,包括晶体纹理 ({111}增长).
- 测量磁性属性,特别是磁晶异构性.
主要成果:
- 在高温 (超过500°C) 时,将气扩散到W种子层的最小化.
- 实现了MnN的优惠晶体成长.
- 测量显著增强的磁晶异构性 (),可与IrMn.相比.
结论:
- 使用W种子层有效地抑制了扩散,并增强了MnN薄膜的异质性.
- 这种方法提供了一个可行的途径,用于室温及以上的应用,开发具有成本效益的高性能反铁磁材料,取代昂贵的IrMn合金.
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