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Synthetic Antiferromagnetic/Ferromagnetic Spin-Orbit Torque Devices with an Oxide Spacer

  • Yu Hsin Huang
  • , Chih Wei Cheng
  • , Ju Hsu
  • , Yu Hui Wu
  • , Yu Lon Lin
  • , Wen Yueh Chang
  • , Yuan Chieh Tseng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We obtained an oscillatory RKKY nature within the Pt/Co/NiO/Co/Pt stack by changing NiO thickness. This allowed us to develop spin-orbit torque (SOT) devices featuring synthetic antiferromagnetic (AFM) and ferromagnetic (FM) couplings. Field-free switching with perpendicular magnetic anisotropy was achievable in AFM- and FM-coupled devices. Nevertheless, a lower switching current density but a larger switching percentage were obtained in the AFM compared to the FM case. The interlayer exchange coupling strength of the NiO was estimated to be close to that of metallic Wand Ta as a spacer material.

Original languageEnglish
Title of host publication2024 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2024 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350362213
DOIs
StatePublished - 2024
Event2024 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2024 - Rio de Janeiro, Brazil
Duration: 5 May 202410 May 2024

Publication series

Name2024 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2024 - Proceedings

Conference

Conference2024 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2024
Country/TerritoryBrazil
CityRio de Janeiro
Period5/05/2410/05/24

Keywords

  • interlayer exchange coupling
  • NiO
  • RKKY
  • spin-orbit torque
  • synthetic antiferromagnetic

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