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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.

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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.

关键词:
抗铁磁主义 抗铁磁主义交易所偏差 交易所偏差在 MnN MnN MnN 中.

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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.