Effects of Zr, Nb, and Cu substitutions on magnetic properties of melt-spun and hot deformed bulk anisotropic nanocomposite SmCo type magnets
Structure and magnetic properties of both melt-spun and hot deformed bulk Sm-Co type nanocomposite magnets have been investigated with various metal additions, including Zr, Cu, and Nb. The Zr and Nb additions play important roles in constraining grain growth, resulting in an increase of coercivity...
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| Veröffentlicht in: | Journal of applied physics 2008-04, Vol.103 (7), p.07E134-07E134-3 |
|---|---|
| Hauptverfasser: | , , , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | Structure and magnetic properties of both melt-spun and hot deformed bulk Sm-Co type nanocomposite magnets have been investigated with various metal additions, including Zr, Cu, and Nb. The Zr and Nb additions play important roles in constraining grain growth, resulting in an increase of coercivity
H
c
. The Cu addition significantly improves the squareness of
B
H
loops as well as the energy product
(
B
H
)
max
. A typical hot deformed bulk anisotropic nanocomposite SmCo type magnet with
M
r
(
hard
)
∕
M
r
(
easy
)
∼
0.4
,
H
c
∼
9
kOe
and
(
B
H
)
max
of
13.2
MG
Oe
was obtained. |
|---|---|
| ISSN: | 0021-8979 1089-7550 |
| DOI: | 10.1063/1.2831334 |