Perpendicular magnetic anisotropy of Pd/Co2MnSi/NiFe2O4/Pd multilayers on F-mica substrates

doi:10.1088/1674-1056/ac20cc

中国物理B ›› 2022, Vol. 31 ›› Issue (1): 17501-017501.doi: 10.1088/1674-1056/ac20cc

Perpendicular magnetic anisotropy of Pd/Co₂MnSi/NiFe₂O₄/Pd multilayers on F-mica substrates

Qingwang Bai(白青旺), Bin Guo(郭斌), Qin Yin(尹钦), and Shuyun Wang(王书运)^†

School of Physics and Electronics, Shandong Normal University, Ji'nan 250358, China

收稿日期:2021-08-05 修回日期:2021-08-19 接受日期:2021-08-25 出版日期:2021-12-03 发布日期:2021-12-31
通讯作者: Shuyun Wang E-mail:wangshuyun65@163.com
基金资助:
Project supported by the Shandong Provincial Natural Science Foundation, China (Grant No. ZR2018MEM004).

Perpendicular magnetic anisotropy of Pd/Co₂MnSi/NiFe₂O₄/Pd multilayers on F-mica substrates

Qingwang Bai(白青旺), Bin Guo(郭斌), Qin Yin(尹钦), and Shuyun Wang(王书运)^†

School of Physics and Electronics, Shandong Normal University, Ji'nan 250358, China

Received:2021-08-05 Revised:2021-08-19 Accepted:2021-08-25 Online:2021-12-03 Published:2021-12-31
Contact: Shuyun Wang E-mail:wangshuyun65@163.com
Supported by:
Project supported by the Shandong Provincial Natural Science Foundation, China (Grant No. ZR2018MEM004).

摘要/Abstract

摘要： Pd/Co₂MnSi (CMS)/NiFe₂O₄ (NFO)/Pd multilayers were fabricated on F-mica substrate by magnetron sputtering. The best PMA performance of the multilayer structure Pd(3 nm)/CMS(5 nm)/NFO(0.8 nm)/Pd(3 nm) was obtained by adjusting the thickness of the CMS and NFO layers. F-mica substrate has a flatter surface than glass and Si/SiO₂ substrate. The magnetic anisotropy energy density (K_eff) of the sample deposited on F-mica substrates is 0.6711 Merg/cm³ (1 erg = 10^-7 J), which is about 30% higher than that of the multilayer films deposited on glass (0.475 Merg/cm³) and Si/SiO₂ (0.511 Merg/cm³) substrates, and the R_Hall and H_C are also significantly increased. In this study, the NFO layer prepared by sputtering in the high purity Ar environment was exposed to the high purity O₂ atmosphere for 5 min, which can effectively eliminate the oxygen loss and oxygen vacancy in NFO, ensuring enough Co-O orbital hybridization at the interface of CMS/NFO, and thus effectively improve the sample PMA.

关键词: perpendicular magnetic anisotropy, Co₂MnSi, ferrimagnetics NiFe₂O₄

Abstract: Pd/Co₂MnSi (CMS)/NiFe₂O₄ (NFO)/Pd multilayers were fabricated on F-mica substrate by magnetron sputtering. The best PMA performance of the multilayer structure Pd(3 nm)/CMS(5 nm)/NFO(0.8 nm)/Pd(3 nm) was obtained by adjusting the thickness of the CMS and NFO layers. F-mica substrate has a flatter surface than glass and Si/SiO₂ substrate. The magnetic anisotropy energy density (K_eff) of the sample deposited on F-mica substrates is 0.6711 Merg/cm³ (1 erg = 10^-7 J), which is about 30% higher than that of the multilayer films deposited on glass (0.475 Merg/cm³) and Si/SiO₂ (0.511 Merg/cm³) substrates, and the R_Hall and H_C are also significantly increased. In this study, the NFO layer prepared by sputtering in the high purity Ar environment was exposed to the high purity O₂ atmosphere for 5 min, which can effectively eliminate the oxygen loss and oxygen vacancy in NFO, ensuring enough Co-O orbital hybridization at the interface of CMS/NFO, and thus effectively improve the sample PMA.

Key words: perpendicular magnetic anisotropy, Co₂MnSi, ferrimagnetics NiFe₂O₄

中图分类号: (Magnetic anisotropy)

75.30.Gw

75.50.Cc (Other ferromagnetic metals and alloys) 75.50.Gg (Ferrimagnetics)

Qingwang Bai(白青旺), Bin Guo(郭斌), Qin Yin(尹钦), and Shuyun Wang(王书运). Perpendicular magnetic anisotropy of Pd/Co₂MnSi/NiFe₂O₄/Pd multilayers on F-mica substrates[J]. 中国物理B, 2022, 31(1): 17501-017501.

Qingwang Bai(白青旺), Bin Guo(郭斌), Qin Yin(尹钦), and Shuyun Wang(王书运). Perpendicular magnetic anisotropy of Pd/Co₂MnSi/NiFe₂O₄/Pd multilayers on F-mica substrates[J]. Chin. Phys. B, 2022, 31(1): 17501-017501.

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Perpendicular magnetic anisotropy of Pd/Co₂MnSi/NiFe₂O₄/Pd multilayers on F-mica substrates

Perpendicular magnetic anisotropy of Pd/Co₂MnSi/NiFe₂O₄/Pd multilayers on F-mica substrates

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