Magnetization Reversal and Domain Structures in Perpendicular Synthetic Antiferromagnets Prepared on Rigid and Flexible Substrates

作者

Shaktiranjan Mohanty¹ , Minaxi Sharma¹ , Ashish Kumar Moharana¹ , Brindaban Ojha¹ , Esita Pandey¹ , Braj Bhusan Singh¹ , Subhankar Bedanta¹

1. National Institute of Science Education and Research, Bhubaneswar

会议/活动

Annual Conference on Quantum Condensed Matter (QMAT) 2022, September 2022 (Kanpur, India)

海报摘要

Ferromagnetic (FM) layers separated by nonmagnetic metallic spacer layers can exhibit Ruderman-Kittel-Kasuya-Yosida (RKKY) coupling, which may lead to a stable synthetic antiferromagnetic (SAF) phase. In this article, we have studied magnetization reversal by varying the number of bilayer stacks [Pt/Co] as well as thicknesses of Ir space layer t_Ir on rigid Si(100) and flexible polyimide substrates. The samples with t_Ir = 1.0 nm show a FM coupling, whereas samples with t_Ir = 1.5 nm show an antiferromagnetic (AFM) coupling between the FM layers. At t_Ir = 2.0 nm, it shows a bow-tie shaped hysteresis loop indicating a canting of magnetization at the reversal. We have also demonstrated the strain-induced modification of IEC as well as magnetization reversal phenomena. The IEC shows a slight decrease upon application of compressive strain and increase upon application of tensile strain, which indicates the potential of SAFs in flexible spintronics.

关键词

Synthetic antiferromagnets, Interlayer exchange coupling, Flexible spintronics, Magnetic domains, Perpendicular magnetic anisotropy

研究领域

Physics

参考文献

1. Zhao, Zhiya, et al. "Magnetic properties of uniaxial synthetic antiferromagnets for spin-valve applications." Physical Review B 71.10 (2005): 104417.
2. Stiles, M. D. (1999). Interlayer exchange coupling. Journal of Magnetism and Magnetic Materials, 200(1-3), 322-337.
3. Chen, Binbin, et al. "All-oxide–based synthetic antiferromagnets exhibiting layer-resolved magnetization reversal." Science 357.6347 (2017): 191-194.
4. Duine, R. A., et al. "Synthetic antiferromagnetic spintronics." Nature physics 14.3 (2018): 217-219.
5. Mohanty, Shaktiranjan, et al. "Magnetization reversal and domain structures in perpendicular synthetic antiferromagnets prepared on rigid and flexible substrates." JOM 74.6 (2022): 2319-2327.

基金

1. Department ofAtomic Energy, Govt.of India
2. Department of Science and Technology-Science and Engineering Research Board, Govt. of India (No. CRG/2021/001245)

补充材料

暂无数据

附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

知识共享许可协议

Copyright © 2022 Mohanty et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.