Open AccessStructure and Magnetic Properties of Melt-Spun Pr(Fe1-xCox)2 Alloys
Author(s) -
Tang Shao-Long,
Cao Qing-Qi,
Dunhui Wang,
JianRong Zhang,
Shiyuan Zhang,
Youwei Du
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.274
Subject(s) - materials science , coercivity , ribbon , melt spinning , laves phase , nanocrystalline material , magnetostriction , thermal stability , phase (matter) , amorphous solid , alloy , condensed matter physics , composite material , spinning , crystallography , intermetallic , magnetic field , nanotechnology , chemical engineering , physics , chemistry , quantum mechanics , engineering
Pr(Fe1-xCox)2 ribbons have been prepared by melt-spinning method. Their structure, magnetic properties and thermal stability are investigated. It is found that Pr(Fe,Co)2 cubic Laves phase can form only when x≥0.2 at wheel speed of 45m/s. For Pr(Fe0.6Co0.4)2 alloy, at wheel speed of 30m/s, the ribbon consistes of a mixture of Pr2(Fe,Co)17, Pr(Fe,Co)2 and rare earth-rich phase. Almost Pr(Fe0.6Co0.4)2 compound a small amount of amorphous phase is observed at wheel speed up to 45m/s. Pr(Fe0.6Co0.4)2 compound becomes unstable above 770℃. The resub-bonded Pr(Fe0.6Co0.4)2 nanocrystalline compound which is obtained at wheel speed of 40m/s combines high magnetostriction (λ∥-λ⊥=140×10-6), with significant magnetic coercivity, iHc=398kA/m.