Temperature-dependent interlayer exchange coupling strength in synthetic antiferromagnetic[Pt/Co]2/Ru/[Co/Pt]4 multilayers

doi:10.1088/1674-1056/27/12/127502

中国物理B ›› 2018, Vol. 27 ›› Issue (12): 127502-127502.doi: 10.1088/1674-1056/27/12/127502

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇下一篇

Temperature-dependent interlayer exchange coupling strength in synthetic antiferromagnetic[Pt/Co]₂/Ru/[Co/Pt]₄ multilayers

Yong Li(李勇), Xiangjun Jin(金香君), Pengfei Pan(潘鹏飞), Fu Nan Tan, Wen Siang Lew, Fusheng Ma(马付胜)

1 Center for Quantum Transport and Thermal Energy Science, Magnetoelectronic Laboratory, School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China;
2 School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore

收稿日期:2018-08-30 修回日期:2018-11-04 出版日期:2018-12-05 发布日期:2018-12-05
通讯作者: Fusheng Ma E-mail:phymafs@njnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11704191), the Jiangsu Specially-Appointed Professor, the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20171026), and the Six-Talent Peaks Project in Jiangsu Province, China (Grant No. XYDXX-038).

Temperature-dependent interlayer exchange coupling strength in synthetic antiferromagnetic[Pt/Co]₂/Ru/[Co/Pt]₄ multilayers

Yong Li(李勇)¹, Xiangjun Jin(金香君)¹, Pengfei Pan(潘鹏飞)¹, Fu Nan Tan², Wen Siang Lew², Fusheng Ma(马付胜)¹

1 Center for Quantum Transport and Thermal Energy Science, Magnetoelectronic Laboratory, School of Physics and Technology, Nanjing Normal University, Nanjing 210023, China;
2 School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore

Received:2018-08-30 Revised:2018-11-04 Online:2018-12-05 Published:2018-12-05
Contact: Fusheng Ma E-mail:phymafs@njnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11704191), the Jiangsu Specially-Appointed Professor, the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20171026), and the Six-Talent Peaks Project in Jiangsu Province, China (Grant No. XYDXX-038).

摘要/Abstract

摘要：

In this work, we experimentally investigated the thermal stability of the interlayer exchange coupling field (H_ex) and strength (-J_iec) in synthetic antiferromagnetic (SAF) structure of[Pt(0.6)/Co(0.6)]₂/Ru(t_Ru)/[Co(0.6)/Pt(0.6)]₄ multilayers with perpendicular anisotropy. Depending on the thickness of the spacing ruthenium (Ru) layer, the observed interlayer exchange coupling can be either ferromagnetic or antiferromagnetic. The H_ex were studied by measuring the magnetization hysteresis loops in the temperature range from 100 K to 700 K as well as the theoretical calculation of the -J_iec. It is found that the interlayer coupling in the multilayers is very sensitive to the thickness of Ru and temperature. The H_ex exhibits either a linear or a non-linear dependence on the temperature for different thickness of Ru. Furthermore, our SAF multilayers show a high thermal stability even up to 600 K (H_ex=3.19 kOe, -J_iec=1.97 erg/cm² for t_Ru=0.6 nm, the unit 1 Oe=79.5775 A·m^-1), which was higher than the previous studies.

关键词: synthetic antiferromagnetic, exchange coupling field, interlayer exchange coupling strength

Abstract:

Key words: synthetic antiferromagnetic, exchange coupling field, interlayer exchange coupling strength

中图分类号: (Antiferromagnetics)

75.50.Ee

75.50.Ss (Magnetic recording materials) 75.60.-d (Domain effects, magnetization curves, and hysteresis)

李勇, 金香君, 潘鹏飞, Fu Nan Tan, Wen Siang Lew, 马付胜. Temperature-dependent interlayer exchange coupling strength in synthetic antiferromagnetic[Pt/Co]₂/Ru/[Co/Pt]₄ multilayers[J]. 中国物理B, 2018, 27(12): 127502-127502.

Yong Li(李勇), Xiangjun Jin(金香君), Pengfei Pan(潘鹏飞), Fu Nan Tan, Wen Siang Lew, Fusheng Ma(马付胜). Temperature-dependent interlayer exchange coupling strength in synthetic antiferromagnetic[Pt/Co]₂/Ru/[Co/Pt]₄ multilayers[J]. Chin. Phys. B, 2018, 27(12): 127502-127502.

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Temperature-dependent interlayer exchange coupling strength in synthetic antiferromagnetic[Pt/Co]₂/Ru/[Co/Pt]₄ multilayers

Temperature-dependent interlayer exchange coupling strength in synthetic antiferromagnetic[Pt/Co]₂/Ru/[Co/Pt]₄ multilayers

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