Magnetic properties and dielectric properties of CoFeB/NdFeB composite films at Terahertz

被引：2

作者：

Guo, Yongbin ^{[1
]}

Wang, Dao ^{[2
]}

Wang, Zhongmin ^{[1
]}

Zhao, Rui ^{[3
]}

Lv, Zijing ^{[3
]}

Li, Yizhang ^{[1
]}

Yang, Xiuwei ^{[1
]}

机构：

[1] Qilu Univ Technol, Inst Automat, Shandong Acad Sci, Jinan 250014, Shandong, Peoples R China

[2] Qiongtai Normal Univ, Coll Sci, Haikou 571127, Hainan, Peoples R China

[3] Ceyear Technol CO LTD, Qingdao 266555, Peoples R China

来源：

COMPOSITES COMMUNICATIONS | 2025年 / 53卷

关键词：

Magnetic properties; Composite films; Dielectric properties; Terahertz; ELECTROMAGNETIC-WAVE ABSORPTION; CO;

D O I：

10.1016/j.coco.2024.102242

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The surface morphology, magnetic properties, exchange coupling and dielectric properties of CoFeB/NdFeB composite films were systematically investigated. The saturation magnetization (Ms) decreases with the increase of CoFeB layer thickness and the magnetic anisotropy field (Hk) reaches minimum when the thickness of CoFeB layer is 200 nm, which indicates the composite films can be applied to electromagnetic shielding with precise control of magnetic field distribution. The real part of the dielectric constant increases first and then decreases with the increase of the thickness of CoFeB film at 75-110 GHz frequency range. The magnetic permeability of the composite films reaches maximum value when the thickness of the CoFeB layer is 200 nm, and the application frequency can be adjusted by CoFeB film thickness, which indicates that the composite films have good electromagnetic response characteristics. It is an ideal choice for high-performance microwave devices in telecommunications equipment.

引用

页数：4

共 50 条

[21] Terahertz spectroscopic study of aeronautical composite matrix resins with different dielectric properties [J].

Wang, Qiang ;

Li, Xinyi ;

Chang, Tianying ;

Hu, Qiuping ;

Yang, Xiaohui .

OPTIK, 2018, 168 :101-111

[22] Dielectric and magnetic properties of dilute magnetic semiconductors Ag-doped ZnO thin films [J].

Kayani, Zohra Nazir ;

Usman, Ayesha ;

Nazli, Hina ;

Sagheer, Riffat ;

Riaz, Saira ;

Naseem, Shahzad .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2020, 126 (07)

[23] Dielectric and magnetic properties of dilute magnetic semiconductors Ag-doped ZnO thin films [J].

Zohra Nazir Kayani ;

Ayesha Usman ;

Hina Nazli ;

Riffat Sagheer ;

Saira Riaz ;

Shahzad Naseem .

Applied Physics A, 2020, 126

[24] Guided-wave terahertz devices for sensing the properties of overlaid dielectric films [J].

Wood, C. ;

Cunningham, J. E. ;

Davies, A. G. ;

Hunter, I. C. ;

Tosch, P. ;

Linfield, E. H. .

TERAHERTZ AND GIGAHERTZ ELECTRONICS AND PHOTONICS V, 2006, 6120

[25] Microstructure and phase dependence of magnetic properties of CoFeB nanowires [J].

Chen, Zhe ;

Zhang, Kewei ;

Zhu, Qianke ;

Guo, Qi ;

Jiang, Yong .

VACUUM, 2021, 183

[26] Effect of high pressure torsion on magnetic properties and corrosion resistance of MnBi/NdFeB composite magnets [J].

Xi, Ziyu ;

Wu, Qiong ;

Ye, Hongwu ;

Shi, Jianghuan ;

Yan, Jiahui ;

Liang, Jiaoli ;

Ge, Hongliang .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2024, 600

[27] Dip-coated V doped ZnO thin films: Dielectric and magnetic properties [J].

Kayani, Zohra Nazir ;

Nazli, Hina ;

Kousar, Sania ;

Riaz, Saira ;

Naseem, Shahzad .

CERAMICS INTERNATIONAL, 2020, 46 (10) :14605-14612

[28] DIELECTRIC-PROPERTIES OF PLASMA POLYMERIZED PVCA AND COMPOSITE PVCAAU FILMS [J].

MACKUS, P ;

POSKUS, A ;

LIPSKIS, K ;

SLAVINSKA, D .

COLLOID AND POLYMER SCIENCE, 1992, 270 (12) :1168-1175

[29] Optical Absorption Properties of Dielectric Composite Films Doped with Metal Nanoparticles [J].

Lu, Huiwen ;

Wang, Weitian .

JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2017, 70 (12) :1060-1063

[30] Optical absorption properties of dielectric composite films doped with metal nanoparticles [J].

Huiwen Lu ;

Weitian Wang .

Journal of the Korean Physical Society, 2017, 70 :1060-1063

← 1 2 3 4 5 →