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<p>The construction of thin film heterostructures has been a widely successful archetype for fabricating materials with emergent physical properties. This strategy is of particular importance for the design of multilayer magnetic architectures in which direct interfacial spin-spin interactions between magnetic phases in dissimilar layers lead to emergent and controllable magnetic behavior. However, crystallographic incommensurability and atomic-scale interfacial disorder can severely limit the types of materials amenable to this strategy, as well as the performance of these systems. Here, we demonstrate a method for synthesizing heterostructures comprising magnetic intercalation compounds of transition metal dichalcogenides (TMDs), through directed topotactic reaction of the TMD with a metal oxide. The mechanism of the intercalation reaction enables thermally initiated intercalation of the TMD from lithographically patterned oxide films, giving access to a family of multi-component magnetic architectures through the combination of deterministic van der Waals assembly and directed intercalation chemistry.</p>

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Tailored topotactic chemistry unlocks heterostructures of magnetic intercalation compounds

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月31日

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  • Samra Husremović,
  • Oscar Gonzalez,
  • Berit H. Goodge,
  • Lilia S. Xie,
  • Zhizhi Kong,
  • Wanlin Zhang,
  • Sae Hee Ryu,
  • Stephanie M. Ribet,
  • Shannon S. Fender,
  • Karen C. Bustillo,
  • Chengyu Song,
  • Jim Ciston,
  • Takashi Taniguchi,
  • Kenji Watanabe,
  • Colin Ophus,
  • Chris Jozwiak,
  • Aaron Bostwick,
  • Eli Rotenberg,
  • D. Kwabena Bediako

摘要

The construction of thin film heterostructures has been a widely successful archetype for fabricating materials with emergent physical properties. This strategy is of particular importance for the design of multilayer magnetic architectures in which direct interfacial spin-spin interactions between magnetic phases in dissimilar layers lead to emergent and controllable magnetic behavior. However, crystallographic incommensurability and atomic-scale interfacial disorder can severely limit the types of materials amenable to this strategy, as well as the performance of these systems. Here, we demonstrate a method for synthesizing heterostructures comprising magnetic intercalation compounds of transition metal dichalcogenides (TMDs), through directed topotactic reaction of the TMD with a metal oxide. The mechanism of the intercalation reaction enables thermally initiated intercalation of the TMD from lithographically patterned oxide films, giving access to a family of multi-component magnetic architectures through the combination of deterministic van der Waals assembly and directed intercalation chemistry.