Design and fabrication of sintered Nd-Fe-B magnets with a low temperature coefficient of intrinsic coercivity

X. G. Cui; M. Yan; T. Y. Ma; W. Luo; S. J. Tu

doi:10.2298/SOS0901091C

Design and fabrication of sintered Nd-Fe-B magnets with a low temperature coefficient of intrinsic coercivity

X. G. Cui
, M. Yan
, T. Y. Ma
, W. Luo
, S. J. Tu

Zhejiang University

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

To decrease the temperature coefficients of sintered Nd-Fe-B magnets, the influencing factors on temperature coefficients, especially the reversible temperature coefficient β of intrinsic coercivity H_cj, were analyzed. The results showed that the absolute value of β decreased with increasing Hcj and also the ratio of microstructure parameter c to N _eff, indicating that the increase of magnetocrystalline anisotropy field H_A and c/N_eff can effectively decrease the absolute value of β. On the basis of this analysis, a sintered Nd-Fe-B magnet with a low temperature coefficient of H_cj was fabricated through composition design, and the value of β was only-0.385 %/ °C in the temperature interval of 20-150°C .

Original language	English
Pages (from-to)	91-99
Number of pages	9
Journal	Science of Sintering
Volume	41
Issue number	1
DOIs	https://doi.org/10.2298/SOS0901091C
State	Published - 2009
Externally published	Yes

Keywords

Analysis of influencing factors
Low temperature coefficient β
Magnetic properties
Sintered Nd-Fe-B magnets

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10.2298/SOS0901091C

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title = "Design and fabrication of sintered Nd-Fe-B magnets with a low temperature coefficient of intrinsic coercivity",

abstract = "To decrease the temperature coefficients of sintered Nd-Fe-B magnets, the influencing factors on temperature coefficients, especially the reversible temperature coefficient β of intrinsic coercivity Hcj, were analyzed. The results showed that the absolute value of β decreased with increasing Hcj and also the ratio of microstructure parameter c to N eff, indicating that the increase of magnetocrystalline anisotropy field HA and c/Neff can effectively decrease the absolute value of β. On the basis of this analysis, a sintered Nd-Fe-B magnet with a low temperature coefficient of Hcj was fabricated through composition design, and the value of β was only-0.385 \%/ °C in the temperature interval of 20-150°C .",

keywords = "Analysis of influencing factors, Low temperature coefficient β, Magnetic properties, Sintered Nd-Fe-B magnets",

author = "Cui, \{X. G.\} and M. Yan and Ma, \{T. Y.\} and W. Luo and Tu, \{S. J.\}",

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T1 - Design and fabrication of sintered Nd-Fe-B magnets with a low temperature coefficient of intrinsic coercivity

AU - Cui, X. G.

AU - Yan, M.

AU - Ma, T. Y.

AU - Luo, W.

AU - Tu, S. J.

PY - 2009

Y1 - 2009

N2 - To decrease the temperature coefficients of sintered Nd-Fe-B magnets, the influencing factors on temperature coefficients, especially the reversible temperature coefficient β of intrinsic coercivity Hcj, were analyzed. The results showed that the absolute value of β decreased with increasing Hcj and also the ratio of microstructure parameter c to N eff, indicating that the increase of magnetocrystalline anisotropy field HA and c/Neff can effectively decrease the absolute value of β. On the basis of this analysis, a sintered Nd-Fe-B magnet with a low temperature coefficient of Hcj was fabricated through composition design, and the value of β was only-0.385 %/ °C in the temperature interval of 20-150°C .

AB - To decrease the temperature coefficients of sintered Nd-Fe-B magnets, the influencing factors on temperature coefficients, especially the reversible temperature coefficient β of intrinsic coercivity Hcj, were analyzed. The results showed that the absolute value of β decreased with increasing Hcj and also the ratio of microstructure parameter c to N eff, indicating that the increase of magnetocrystalline anisotropy field HA and c/Neff can effectively decrease the absolute value of β. On the basis of this analysis, a sintered Nd-Fe-B magnet with a low temperature coefficient of Hcj was fabricated through composition design, and the value of β was only-0.385 %/ °C in the temperature interval of 20-150°C .

KW - Analysis of influencing factors

KW - Low temperature coefficient β

KW - Magnetic properties

KW - Sintered Nd-Fe-B magnets

UR - https://www.scopus.com/pages/publications/70849119166

U2 - 10.2298/SOS0901091C

DO - 10.2298/SOS0901091C

M3 - 文章

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SN - 0350-820X

VL - 41

SP - 91

EP - 99

JO - Science of Sintering

JF - Science of Sintering

IS - 1

ER -

Design and fabrication of sintered Nd-Fe-B magnets with a low temperature coefficient of intrinsic coercivity

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Keywords

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