Study on Saturation Magnetization Behavior of Sintered NdFeB

HOU Ruifen; ZHANG Zhigao; XU Zhiyi; DONG Hui; YAN Lizhong; YANG Tian; YANG Yiwei

doi:10.12338/j.issn.2096-9015.2020.9012

Volume 65 Issue 5

Jun. 2021

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Article Navigation > Metrology Science and Technology > 2021 > 65(5): 93-95, 35

HOU Ruifen, ZHANG Zhigao, XU Zhiyi, DONG Hui, YAN Lizhong, YANG Tian, YANG Yiwei. Study on Saturation Magnetization Behavior of Sintered NdFeB[J]. Metrology Science and Technology, 2021, 65(5): 93-95, 35. doi: 10.12338/j.issn.2096-9015.2020.9012

Citation:

HOU Ruifen, ZHANG Zhigao, XU Zhiyi, DONG Hui, YAN Lizhong, YANG Tian, YANG Yiwei. Study on Saturation Magnetization Behavior of Sintered NdFeB[J]. Metrology Science and Technology, 2021, 65(5): 93-95, 35. doi: 10.12338/j.issn.2096-9015.2020.9012

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Study on Saturation Magnetization Behavior of Sintered NdFeB

doi: 10.12338/j.issn.2096-9015.2020.9012

HOU Ruifen^1
,,
ZHANG Zhigao^{1
,
,},
XU Zhiyi^{2, 3},
DONG Hui⁴,
YAN Lizhong⁴,
YANG Tian¹,
YANG Yiwei¹

1.
National Institute of Metrology, Beijing 100029, China
2.
Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou 341000, China
3.
Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
4.
China National Metrology Technology Development Co., Beijing 100029, China

Available Online: 2021-06-07
Publish Date: 2021-06-24

Abstract

Abstract

To clarify the relationship between the minimum saturation magnetization field strength required for sintered NdFeB magnets and their intrinsic coercivity or saturation polarization in the initial state of magnetic neutrality and magnetized history, three different grades of sintered NdFeB magnets were selected in different initial states. The magnetic dipole moments and the demagnetization curves were measured after magnetizing under different magnetic field strengths. The results show that for sintered NdFeB magnets, only a magnetization field of H_s=2J_s/μ₀ is required to saturate the magnets in the state of magnetic neutrality. For magnets with magnetized history, a magnetization field of H_s=3J_s/μ₀ is required to realize saturation magnetization.
- sintered NdFeB,
- permanent magnet,
- demagnetization curves,
- polarization strength,
- saturation magnetization

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References(15)

References

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