Structural, magnetic, and magnetostrictive properties of Tb1-xNdx(Fe0.9B0.1)2alloys

W. J. Ren; Siu Wing Or; H. L.W. Chan; X. G. Zhao; J. J. Liu; Z. D. Zhang

doi:10.1109/TMAG.2004.830177

Structural, magnetic, and magnetostrictive properties of Tb_1-xNd_x(Fe_0.9B_0.1)₂alloys

W. J. Ren, Siu Wing Or, H. L.W. Chan, X. G. Zhao, J. J. Liu, Z. D. Zhang

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

16 Citations (Scopus)

Abstract

The crystal structure, magnetization, and spontaneous magnetostriction of Tb1-xNdx(Fe0.9B0.1)2alloys have been investigated. X-ray diffraction (XRD) analysis shows that the alloys consist predominantly of the cubic Laves phase with a MgCu2-type structure for x ≤ 0.55. Increasing in lattice parameter and decreasing in Curie temperature with increasing x from 0 to 0.55 reveals an increment in the Nd content in the Laves phase. The (440) XRD line of the Laves phase splits doubly when x ≤ 0.7 because of a large spontaneous magnetostriction along its 〈111〉 easy magnetization direction. The magnetostriction coefficient λ111decreases significantly with increasing x when 0 ≤ x ≤ 0.55. For x ≥ 0.7, it is difficult to achieve saturation magnetization at room temperature due to increased amount of the Nd2Fe14B-type phase with large magnetocrystalline anisotropy.

Original language	English
Pages (from-to)	2772-2774
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	40
Issue number	4 II
DOIs	https://doi.org/10.1109/TMAG.2004.830177
Publication status	Published - 1 Jul 2004

Keywords

Crystal structure
Laves phase
Magnetization
Magnetostriction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

More information

10.1109/TMAG.2004.830177

http://hdl.handle.net/10397/496

Cite this

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title = "Structural, magnetic, and magnetostrictive properties of Tb1-xNdx(Fe0.9B0.1)2alloys",

abstract = "The crystal structure, magnetization, and spontaneous magnetostriction of Tb1-xNdx(Fe0.9B0.1)2alloys have been investigated. X-ray diffraction (XRD) analysis shows that the alloys consist predominantly of the cubic Laves phase with a MgCu2-type structure for x ≤ 0.55. Increasing in lattice parameter and decreasing in Curie temperature with increasing x from 0 to 0.55 reveals an increment in the Nd content in the Laves phase. The (440) XRD line of the Laves phase splits doubly when x ≤ 0.7 because of a large spontaneous magnetostriction along its 〈111〉 easy magnetization direction. The magnetostriction coefficient λ111decreases significantly with increasing x when 0 ≤ x ≤ 0.55. For x ≥ 0.7, it is difficult to achieve saturation magnetization at room temperature due to increased amount of the Nd2Fe14B-type phase with large magnetocrystalline anisotropy.",

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AU - Ren, W. J.

AU - Or, Siu Wing

AU - Chan, H. L.W.

AU - Zhao, X. G.

AU - Liu, J. J.

AU - Zhang, Z. D.

PY - 2004/7/1

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N2 - The crystal structure, magnetization, and spontaneous magnetostriction of Tb1-xNdx(Fe0.9B0.1)2alloys have been investigated. X-ray diffraction (XRD) analysis shows that the alloys consist predominantly of the cubic Laves phase with a MgCu2-type structure for x ≤ 0.55. Increasing in lattice parameter and decreasing in Curie temperature with increasing x from 0 to 0.55 reveals an increment in the Nd content in the Laves phase. The (440) XRD line of the Laves phase splits doubly when x ≤ 0.7 because of a large spontaneous magnetostriction along its 〈111〉 easy magnetization direction. The magnetostriction coefficient λ111decreases significantly with increasing x when 0 ≤ x ≤ 0.55. For x ≥ 0.7, it is difficult to achieve saturation magnetization at room temperature due to increased amount of the Nd2Fe14B-type phase with large magnetocrystalline anisotropy.

AB - The crystal structure, magnetization, and spontaneous magnetostriction of Tb1-xNdx(Fe0.9B0.1)2alloys have been investigated. X-ray diffraction (XRD) analysis shows that the alloys consist predominantly of the cubic Laves phase with a MgCu2-type structure for x ≤ 0.55. Increasing in lattice parameter and decreasing in Curie temperature with increasing x from 0 to 0.55 reveals an increment in the Nd content in the Laves phase. The (440) XRD line of the Laves phase splits doubly when x ≤ 0.7 because of a large spontaneous magnetostriction along its 〈111〉 easy magnetization direction. The magnetostriction coefficient λ111decreases significantly with increasing x when 0 ≤ x ≤ 0.55. For x ≥ 0.7, it is difficult to achieve saturation magnetization at room temperature due to increased amount of the Nd2Fe14B-type phase with large magnetocrystalline anisotropy.

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