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Magnetic properties and microstructure of the dual-phase nanocomposite magnet Sm3(Fe,Ti)29Nx/α-Fe

✍ Scribed by Y. Zhang; C.X. Cui; J.B. Sun; H.X. Yang; H.F. Tian; H.R. Zhang; J.Q. Li

Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
381 KB
Volume
433
Category
Article
ISSN
0921-5093

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✦ Synopsis

A new dual-phase nanocomposite magnet, made up of the well-coupled Sm 3 (Fe,Ti) 29 N x and ␣-Fe nano-crystals, has been successfully fabricated by the melt-spun technique. Measurements of magnetic properties reveal that the hysteresis loop shows up the notable characteristics of single hard magnet in the well-crystallized samples. The electron microscopy investigations indicate that the grain sizes in our samples in general range from 30 to 60 nm for Sm 3 (Fe,Ti) 29 N x and from 10 to 20 nm for ␣-Fe, grain boundaries between the Sm 3 (Fe,Ti) 29 N x and ␣-Fe phases are clean without any impurities. These structural features are fundamentally compatible with direct exchange-coupling between these two magnetic phases.

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