Magnetic State of Multilayered Synthetic Antiferromagnets during Soliton Nucleation and Propagation for Vertical Data Transfer

Amalio Fernández-Pacheco, Nina Juliane Steinke, Dishant Mahendru, Alexander Welbourne, Rhodri Mansell, Shin L. Chin, Dorothée Petit, Jihyun Lee, Robert Dalgliesh, Sean Langridge, Russell P. Cowburn

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Magnetic solitons in multilayered synthetic antiferromagnets (SAFs) have been recently proposed as data carriers for vertical data transfer, constituting a promising approach for 3D spintronic systems. Here, the nucleation and propagation of solitons in CoFeB/Ru SAFs are investigated under external magnetic fields by magnetooptical Kerr effect (MOKE), magnetoresistance (MR), and polarized neutron reflectivity (PNR) measurements. By comparing MOKE and MR measurements with macrospin simulations, the key steps of the mechanism behind soliton nucleation, triggered by the surface spin-flop transition and involving the switching of several layers, are determined. PNR confirms this scenario, and proves the correct propagation of solitons, with their expulsion leading to data inversion (NOT gate functionality). Additionally, the structure of solitons after nucleation is determined, finding them to be achiral under external magnetic fields.

Original languageEnglish
JournalAdvanced Materials Interfaces
DOIs
Publication statusAccepted/In press - 2016
Externally publishedYes

Fingerprint

Data transfer
Solitons
Wave propagation
Nucleation
Kerr magnetooptical effect
Magnetoresistance
Neutrons
Magnetic fields
Magnetoelectronics

Keywords

  • 3D memory
  • Magnetic multilayers
  • Magnetoresistance
  • Nanomagnetic logic
  • Neutron reflectometry

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Fernández-Pacheco, A., Steinke, N. J., Mahendru, D., Welbourne, A., Mansell, R., Chin, S. L., ... Cowburn, R. P. (Accepted/In press). Magnetic State of Multilayered Synthetic Antiferromagnets during Soliton Nucleation and Propagation for Vertical Data Transfer. Advanced Materials Interfaces. https://doi.org/10.1002/admi.201600097

Magnetic State of Multilayered Synthetic Antiferromagnets during Soliton Nucleation and Propagation for Vertical Data Transfer. / Fernández-Pacheco, Amalio; Steinke, Nina Juliane; Mahendru, Dishant; Welbourne, Alexander; Mansell, Rhodri; Chin, Shin L.; Petit, Dorothée; Lee, Jihyun; Dalgliesh, Robert; Langridge, Sean; Cowburn, Russell P.

In: Advanced Materials Interfaces, 2016.

Research output: Contribution to journalArticle

Fernández-Pacheco, A, Steinke, NJ, Mahendru, D, Welbourne, A, Mansell, R, Chin, SL, Petit, D, Lee, J, Dalgliesh, R, Langridge, S & Cowburn, RP 2016, 'Magnetic State of Multilayered Synthetic Antiferromagnets during Soliton Nucleation and Propagation for Vertical Data Transfer', Advanced Materials Interfaces. https://doi.org/10.1002/admi.201600097
Fernández-Pacheco, Amalio ; Steinke, Nina Juliane ; Mahendru, Dishant ; Welbourne, Alexander ; Mansell, Rhodri ; Chin, Shin L. ; Petit, Dorothée ; Lee, Jihyun ; Dalgliesh, Robert ; Langridge, Sean ; Cowburn, Russell P. / Magnetic State of Multilayered Synthetic Antiferromagnets during Soliton Nucleation and Propagation for Vertical Data Transfer. In: Advanced Materials Interfaces. 2016.
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AU - Welbourne, Alexander

AU - Mansell, Rhodri

AU - Chin, Shin L.

AU - Petit, Dorothée

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