Effect of wheel speed on the microstructure and exchange coupling interaction of nanocomposite Nd2Fe14B/α-Fe magnets

S. Yang; X. S. Liu; S. D. Li; G. Z. Xie; X. P. Song; B. X. Gu; Y. W. Du

doi:10.1016/S0921-5093(02)00606-8

Effect of wheel speed on the microstructure and exchange coupling interaction of nanocomposite Nd₂Fe₁₄B/α-Fe magnets

S. Yang
, X. S. Liu
, S. D. Li
, G. Z. Xie
, X. P. Song
, B. X. Gu
, Y. W. Du

School of Physics

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

9 Scopus citations

Abstract

The exchange coupled Nd₂Fe₁₄B/α-Fe nanocomposite magnets have been synthesized by melt-spinning. The effect of wheel speed on the microstructure and exchange coupling interaction has been studied. The results show that a uniform Nd₂Fe₁₄B/α-Fe nanocomposite structure with fine α-Fe grains can be developed at an optimum wheel speed of about 12 m s^-1. After a low temperature annealing, the ribbons show a stronger exchange coupling interaction and the magnetic properties reach a maximum value: _jH_c = 432.2 kA m^-1, J_r = 1.08 T, (BH)_max = 115 kJ m^-3. With further increase in wheel speed, the microstructure of the ribbons becomes non-uniform after a subsequent high temperature crystallization, and several α-Fe grains abnormally grow to about 100 nm, deteriorating the magnetic properties of the ribbons.

Original language	English
Pages (from-to)	325-329
Number of pages	5
Journal	Materials Science and Engineering: A
Volume	347
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-5093(02)00606-8
State	Published - 25 Apr 2003

Keywords

Coercivity
Exchange coupling
Melt-spinning
Microstructure
Nanocomposite magnets

Access to Document

10.1016/S0921-5093(02)00606-8

Cite this

@article{b8ea3e8f31294d3fa881dcd9ae383e8a,

title = "Effect of wheel speed on the microstructure and exchange coupling interaction of nanocomposite Nd2Fe14B/α-Fe magnets",

abstract = "The exchange coupled Nd2Fe14B/α-Fe nanocomposite magnets have been synthesized by melt-spinning. The effect of wheel speed on the microstructure and exchange coupling interaction has been studied. The results show that a uniform Nd2Fe14B/α-Fe nanocomposite structure with fine α-Fe grains can be developed at an optimum wheel speed of about 12 m s-1. After a low temperature annealing, the ribbons show a stronger exchange coupling interaction and the magnetic properties reach a maximum value: jHc = 432.2 kA m-1, Jr = 1.08 T, (BH)max = 115 kJ m-3. With further increase in wheel speed, the microstructure of the ribbons becomes non-uniform after a subsequent high temperature crystallization, and several α-Fe grains abnormally grow to about 100 nm, deteriorating the magnetic properties of the ribbons.",

keywords = "Coercivity, Exchange coupling, Melt-spinning, Microstructure, Nanocomposite magnets",

author = "S. Yang and Liu, \{X. S.\} and Li, \{S. D.\} and Xie, \{G. Z.\} and Song, \{X. P.\} and Gu, \{B. X.\} and Du, \{Y. W.\}",

year = "2003",

month = apr,

day = "25",

doi = "10.1016/S0921-5093(02)00606-8",

language = "英语",

volume = "347",

pages = "325--329",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

number = "1-2",

}

TY - JOUR

T1 - Effect of wheel speed on the microstructure and exchange coupling interaction of nanocomposite Nd2Fe14B/α-Fe magnets

AU - Yang, S.

AU - Liu, X. S.

AU - Li, S. D.

AU - Xie, G. Z.

AU - Song, X. P.

AU - Gu, B. X.

AU - Du, Y. W.

PY - 2003/4/25

Y1 - 2003/4/25

N2 - The exchange coupled Nd2Fe14B/α-Fe nanocomposite magnets have been synthesized by melt-spinning. The effect of wheel speed on the microstructure and exchange coupling interaction has been studied. The results show that a uniform Nd2Fe14B/α-Fe nanocomposite structure with fine α-Fe grains can be developed at an optimum wheel speed of about 12 m s-1. After a low temperature annealing, the ribbons show a stronger exchange coupling interaction and the magnetic properties reach a maximum value: jHc = 432.2 kA m-1, Jr = 1.08 T, (BH)max = 115 kJ m-3. With further increase in wheel speed, the microstructure of the ribbons becomes non-uniform after a subsequent high temperature crystallization, and several α-Fe grains abnormally grow to about 100 nm, deteriorating the magnetic properties of the ribbons.

AB - The exchange coupled Nd2Fe14B/α-Fe nanocomposite magnets have been synthesized by melt-spinning. The effect of wheel speed on the microstructure and exchange coupling interaction has been studied. The results show that a uniform Nd2Fe14B/α-Fe nanocomposite structure with fine α-Fe grains can be developed at an optimum wheel speed of about 12 m s-1. After a low temperature annealing, the ribbons show a stronger exchange coupling interaction and the magnetic properties reach a maximum value: jHc = 432.2 kA m-1, Jr = 1.08 T, (BH)max = 115 kJ m-3. With further increase in wheel speed, the microstructure of the ribbons becomes non-uniform after a subsequent high temperature crystallization, and several α-Fe grains abnormally grow to about 100 nm, deteriorating the magnetic properties of the ribbons.

KW - Coercivity

KW - Exchange coupling

KW - Melt-spinning

KW - Microstructure

KW - Nanocomposite magnets

UR - https://www.scopus.com/pages/publications/0037466575

U2 - 10.1016/S0921-5093(02)00606-8

DO - 10.1016/S0921-5093(02)00606-8

M3 - 文章

AN - SCOPUS:0037466575

SN - 0921-5093

VL - 347

SP - 325

EP - 329

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Effect of wheel speed on the microstructure and exchange coupling interaction of nanocomposite Nd₂Fe₁₄B/α-Fe magnets

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this