Magnetization reversal of perpendicular magnetic anisotropy multilayers on polymeric substrates for flexible spintronics applications

Bevan, R. S.; Chhatoi, R.; Mallick, S.; Cafolla, C.; Nicholson, B.; Bedanta, S.; Atkinson, D.

doi:10.1063/5.0243189

Magnetization reversal of perpendicular magnetic anisotropy multilayers on polymeric substrates for flexible spintronics applications

Bevan, R. S.; Chhatoi, R.; Mallick, S.; Cafolla, C.; Nicholson, B.; Bedanta, S.; Atkinson, D.

Authors

R. S. Bevan

R. Chhatoi

S. Mallick

Dr Miro Cafolla clodomiro.cafolla@durham.ac.uk
Addison Wheeler Research Fellow

Dr Ben Nicholson ben.nicholson@durham.ac.uk
Post Doctoral Research Associate

S. Bedanta

Professor Del Atkinson del.atkinson@durham.ac.uk
Professor

Abstract

Earlier demonstrations of spintronic functionality on flexible substrates have highlighted the potential for spintronics in flexible electronics applications. However, for device applications, the relationship between global magnetization reversal, as measured by hysteresis, and the local reversal processes of nucleation and growth of magnetic domains need to be understood for magnetic systems on flexible substrates. This study compares the local magnetization reversal behavior of perpendicularly magnetized Pt/CoFeB/Pt and Pt/Co/Pt on rigid and flexible polymeric substrates using magneto-optical Kerr effect magnetometry and microscopy. It is shown that while the magnetic hysteresis is comparable, the local details of the nucleation and field driven reversal are quite different and are attributed to the greater variability of the surface structures of the polymeric substrates, which has implications for consistency in device performance.

Citation

Bevan, R. S., Chhatoi, R., Mallick, S., Cafolla, C., Nicholson, B., Bedanta, S., & Atkinson, D. (2024). Magnetization reversal of perpendicular magnetic anisotropy multilayers on polymeric substrates for flexible spintronics applications. Journal of Applied Physics, 136(22), Article 223901. https://doi.org/10.1063/5.0243189

Journal Article Type	Article
Acceptance Date	Nov 18, 2024
Online Publication Date	Dec 9, 2024
Publication Date	Dec 14, 2024
Deposit Date	Jan 16, 2025
Publicly Available Date	Jan 16, 2025
Journal	Journal of Applied Physics
Print ISSN	0021-8979
Electronic ISSN	1089-7550
Publisher	American Institute of Physics
Peer Reviewed	Peer Reviewed
Volume	136
Issue	22
Article Number	223901
DOI	https://doi.org/10.1063/5.0243189
Public URL	https://durham-repository.worktribe.com/output/3337171