Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/107208
Title: Structure and magnetic properties of chill-cast and melt-spun Ndx(Fe3Al)100-x and Nd33(FeyAl)67 alloys
Authors: Si, L. 
Ding, J. 
Li, Y. 
Yao, B. 
Keywords: Chill-cast rod
Magnetic properties
Melt-spun ribbon
Mössbauer study
Issue Date: 2001
Citation: Si, L.,Ding, J.,Li, Y.,Yao, B. (2001). Structure and magnetic properties of chill-cast and melt-spun Ndx(Fe3Al)100-x and Nd33(FeyAl)67 alloys. Materials Transactions 42 (4) : 664-669. ScholarBank@NUS Repository.
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 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.
Source Title: Materials Transactions
URI: http://scholarbank.nus.edu.sg/handle/10635/107208
ISSN: 13459678
Appears in Collections:Staff Publications

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