Structure and magnetic properties of chill-cast and melt-spun Ndx(Fe3Al)100-x and Nd33(FeyAl)67 alloys

L. Si; J. Ding; Y. Li; B. Yao

doi:10.2320/matertrans.42.664

Structure and magnetic properties of chill-cast and melt-spun Nd_x(Fe₃Al)_100-x and Nd₃₃(Fe_yAl)₆₇ alloys

L. Si^*
, J. Ding
, Y. Li
, B. Yao

^*Corresponding author for this work

National University of Singapore

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

2 Scopus citations

Abstract

The magnetic properties of chill-cast Nd-Fe-Al rods have been studied as a function of Nd and Al concentrations. High coercivities were obtained in Nd₆₀(Fe₃Al)₄₀, Nd₅₀(Fe₃Al)₅₀ and Nd₃₃(Fe₁₀Al)₆₇ alloys. The study on the melt-spun ribbons of these alloys has shown that coercivity is dependent on the quenching rate, and high coercivity could only be obtained in alloys prepared after a relatively low quenching rate. Several crystalline Nd-Fe-Al phases have been investigated in this work. A metastable tetragonal phase existed as nearly the single phase in Nd₃₃(Fe_yAl)₆₇ with y = 2-4. The tetragonal phase is antiferromagnetic with a Néel temperature of 260 K. Metamagnetism and magnetoresistivity have been observed. The study on the annealed Nd₃₃(FeAl)₆₇ alloy has shown that a hexagonal phase and an unknown were formed and these two Fe-containing phases, among which one is an antiferromagnetic with a Néel temperature of 280 K and the another is ferromagnetic below 130-140 K.

Original language	English
Pages (from-to)	664-669
Number of pages	6
Journal	Materials Transactions
Volume	42
Issue number	4
DOIs	https://doi.org/10.2320/matertrans.42.664
State	Published - 2001
Externally published	Yes

Keywords

Chill-cast rod
Magnetic properties
Melt-spun ribbon
Mössbauer study

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10.2320/matertrans.42.664

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title = "Structure and magnetic properties of chill-cast and melt-spun Ndx(Fe3Al)100-x and Nd33(FeyAl)67 alloys",

abstract = "The magnetic properties of chill-cast Nd-Fe-Al rods have been studied as a function of Nd and Al concentrations. High coercivities were obtained in Nd60(Fe3Al)40, Nd50(Fe3Al)50 and Nd33(Fe10Al)67 alloys. The study on the melt-spun ribbons of these alloys has shown that coercivity is dependent on the quenching rate, and high coercivity could only be obtained in alloys prepared after a relatively low quenching rate. Several crystalline Nd-Fe-Al phases have been investigated in this work. A metastable tetragonal phase existed as nearly the single phase in Nd33(FeyAl)67 with y = 2-4. The tetragonal phase is antiferromagnetic with a N{\'e}el temperature of 260 K. Metamagnetism and magnetoresistivity have been observed. The study on the annealed Nd33(FeAl)67 alloy has shown that a hexagonal phase and an unknown were formed and these two Fe-containing phases, among which one is an antiferromagnetic with a N{\'e}el temperature of 280 K and the another is ferromagnetic below 130-140 K.",

keywords = "Chill-cast rod, Magnetic properties, Melt-spun ribbon, M{\"o}ssbauer study",

author = "L. Si and J. Ding and Y. Li and B. Yao",

year = "2001",

doi = "10.2320/matertrans.42.664",

language = "英语",

volume = "42",

pages = "664--669",

journal = "Materials Transactions",

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TY - JOUR

T1 - Structure and magnetic properties of chill-cast and melt-spun Ndx(Fe3Al)100-x and Nd33(FeyAl)67 alloys

AU - Si, L.

AU - Ding, J.

AU - Li, Y.

AU - Yao, B.

PY - 2001

Y1 - 2001

N2 - The magnetic properties of chill-cast Nd-Fe-Al rods have been studied as a function of Nd and Al concentrations. High coercivities were obtained in Nd60(Fe3Al)40, Nd50(Fe3Al)50 and Nd33(Fe10Al)67 alloys. The study on the melt-spun ribbons of these alloys has shown that coercivity is dependent on the quenching rate, and high coercivity could only be obtained in alloys prepared after a relatively low quenching rate. Several crystalline Nd-Fe-Al phases have been investigated in this work. A metastable tetragonal phase existed as nearly the single phase in Nd33(FeyAl)67 with y = 2-4. The tetragonal phase is antiferromagnetic with a Néel temperature of 260 K. Metamagnetism and magnetoresistivity have been observed. The study on the annealed Nd33(FeAl)67 alloy has shown that a hexagonal phase and an unknown were formed and these two Fe-containing phases, among which one is an antiferromagnetic with a Néel temperature of 280 K and the another is ferromagnetic below 130-140 K.

AB - The magnetic properties of chill-cast Nd-Fe-Al rods have been studied as a function of Nd and Al concentrations. High coercivities were obtained in Nd60(Fe3Al)40, Nd50(Fe3Al)50 and Nd33(Fe10Al)67 alloys. The study on the melt-spun ribbons of these alloys has shown that coercivity is dependent on the quenching rate, and high coercivity could only be obtained in alloys prepared after a relatively low quenching rate. Several crystalline Nd-Fe-Al phases have been investigated in this work. A metastable tetragonal phase existed as nearly the single phase in Nd33(FeyAl)67 with y = 2-4. The tetragonal phase is antiferromagnetic with a Néel temperature of 260 K. Metamagnetism and magnetoresistivity have been observed. The study on the annealed Nd33(FeAl)67 alloy has shown that a hexagonal phase and an unknown were formed and these two Fe-containing phases, among which one is an antiferromagnetic with a Néel temperature of 280 K and the another is ferromagnetic below 130-140 K.

KW - Chill-cast rod

KW - Magnetic properties

KW - Melt-spun ribbon

KW - Mössbauer study

UR - https://www.scopus.com/pages/publications/0034969833

U2 - 10.2320/matertrans.42.664

DO - 10.2320/matertrans.42.664

M3 - 文章

AN - SCOPUS:0034969833

SN - 1345-9678

VL - 42

SP - 664

EP - 669

JO - Materials Transactions

JF - Materials Transactions

IS - 4

ER -

Structure and magnetic properties of chill-cast and melt-spun Nd_x(Fe₃Al)_100-x and Nd₃₃(Fe_yAl)₆₇ alloys

Abstract

Keywords

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