Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer

Ye, Zhixing; Zhao, Xiaotian; Liu, Long; Liu, Wei; Wang, Jinghui; Wu, JinXiang; Li, Yang; Ma, Jun; Ju, Hongzhan; Zhang, Zhidong

doi:10.1039/d3nr03677d

Nanoscale

2023

DOI: 10.1039/d3nr03677d

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Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer

Zhixing Ye,

Xiaotian Zhao,

Long Liu

et al.

Abstract: With increasing the ratio of Dy in the Nd-Dy diffusion layers of NdFeB thick films, the saturation magnetization has an anomalously slight enhancement, while the coercivity and remanent magnetization have a large enhancement.

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Cited by 2 publications

References 41 publications

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Improving magnetic properties of FeCrCo films by facilitating the internal α-γ phase transition through Pt diffusion

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Enhanced dipole-interaction in Nd-Dy-Fe-Co-B/Fe composite thick stacked trilayer

Li,

Zhao,

Liu

et al. 2024

Journal of Applied Physics

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It is crucial to better understand the magnetization reversal process between soft and hard magnets and to achieve a high maximum energy product in thick composite multilayers. In this study, we find that the exchange interactions dominate in soft–hard-magnetic composite bilayers, while dipole interactions are predominant in soft–hard-magnetic composite trilayers. Based on the first-order reversal curve, magnetization reversal models are developed for both the thick composite bilayer and trilayer. Dipole interactions play an important role in the long range, resulting in higher coercivity and remanence in the thick trilayer. A multilayer in a stacked trilayer structure is achieved, which is composed of thick films with a perpendicular magnetic anisotropy at a thickness of up to 16 μm. The enhanced dipole interactions lead to a remanent polarization of 1 T and a maximum energy product of 22.5 MGOe. This work contributes to the preparation of thick films with a high maximum energy product for applications in magnetic microelectromechanical systems.

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Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer

Abstract: With increasing the ratio of Dy in the Nd-Dy diffusion layers of NdFeB thick films, the saturation magnetization has an anomalously slight enhancement, while the coercivity and remanent magnetization have a large enhancement.

Cited by 2 publications

References 41 publications

Improving magnetic properties of FeCrCo films by facilitating the internal α-γ phase transition through Pt diffusion

Improving magnetic properties of FeCrCo films by facilitating the internal α-γ phase transition through Pt diffusion

Enhanced dipole-interaction in Nd-Dy-Fe-Co-B/Fe composite thick stacked trilayer

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