Enhanced Magnetic Properties of Spark Plasma Sintered (La/Ce)-Fe-B Magnets

Enhanced Magnetic Properties of Spark Plasma Sintered (La/Ce)-Fe-B Magnets

La substitution for Ce inhibits the growth of the CeFe 2 phase and promotes the formation of the single 2:14:1 phase, leading to an improvement in the magnetic properties of melt-spun (La/Ce) 3 Fe 14 B ribbons. Among which, the (La 0.3 Ce 0.7 ) 3 Fe 14 B ribbon produced a high remanence of 6.86 kG,...

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Veröffentlicht in:IEEE transactions on magnetics 2017-11, Vol.53 (11), p.1-3
Hauptverfasser: Lu, Q. M., Niu, J., Liu, W. Q., Yue, M., Altounian, Z.
Format: Artikel
Sprache:eng
Schlagworte:
Coercive force
Coercivity
Compounds
Light rare earth
Magnetic properties
Magnetism
Magnetization
Magnets
Melt spinning
NdCu alloy
Nd₂Fe₁₄B
Physics
Plasma sintering
Remanence
Spark plasma sintering
X-ray scattering
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Beschreibung
Zusammenfassung:La substitution for Ce inhibits the growth of the CeFe 2 phase and promotes the formation of the single 2:14:1 phase, leading to an improvement in the magnetic properties of melt-spun (La/Ce) 3 Fe 14 B ribbons. Among which, the (La 0.3 Ce 0.7 ) 3 Fe 14 B ribbon produced a high remanence of 6.86 kG, a coercivity of 5.51 kOe, and a maximum energy product (BH)max of 7.68 MGOe. After spark plasma sintering, the compacted (La 0.3 Ce 0.7 ) 3 Fe 14 B magnet with good remanence and coercivity was successfully prepared, and these properties were enhanced to 5.14 kG and 5.60 kOe, respectively, leading to an energy product of 4.59 MGOe for the magnet with 5 wt % NdCu addition.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2017.2718041