MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Magnetic Properties of SmFe3-Type Sm–Zr–Fe–Co–Ti Melt-Spun Ribbons
Tetsuji SaitoToru HoritaDaisuke Nishio-Hamane
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2019 Volume 60 Issue 7 Pages 1384-1389

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Abstract

The magnetic properties and structures of (Sm,Zr)5(Fe,Co)17−xTix (x = 0–2.0) melt-spun ribbons were investigated in the as-quenched condition and after annealing. The as-quenched (Sm,Zr)5(Fe,Co)17−xTix (x = 0–0.5) specimens consisted of the Sm5Fe17-type and SmFe3-type phases, while the as-quenched (Sm,Zr)5(Fe,Co)17−xTix (x = 1.0–2.0) specimens contained the SmFe3-type phase. These specimens showed low coercivity regardless of the Ti content. Heat treatment of the melt-spun ribbons resulted in a drastic increase in coercivity. The maximum coercivity of 1.11 MAm−1 was achieved in the (Sm,Zr)5(Fe,Co)15.5Ti1.5 specimen annealed at 1073 K. Microstructural studies revealed that the annealed specimen consisted mainly of the SmFe3-type phase. The achieved high coercivity of the annealed specimen was therefore attributed to the existence of the SmFe3-type phase.

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© 2019 The Japan Institute of Metals and Materials
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