Optimizing the magnetic properties of Ce-containing Nd–Fe–B sintered magnets with La substitution. (26th February 2020)

• Record Type: Journal Article
• Authors: Li, Z; Liu, W Q; Zhang, Z P; Wu, D; Li, Y Q; Yue, M
• Is Part Of: Materials research express. Volume 6:Number 12(2019)
• Publication Date: 2020-02-26
• Subjects: Ce-containing Nd–Fe–B sintered magnets -- CeFe2 phase -- La substitution -- magnetic properties -- grain boundary; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab5e2e
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Ce and La–Ce containing magnets with the compositions of [(La0.4 Ce0.6 )0.4 Nd0.6 ]31.5 Febal M2.02 B0.96 and (Ce0.4 Nd0.6 )31.5 Febal M2.02 B0.96 were prepared by traditional sintering process. The results shows La substitution for Ce occurs in the 2:14:1 matrix phase which suppress the formation of the nonmagnetic CeFe2 phase in the magnet. Moreover, compared to the Ce containing magnet, the grain boundry (GB) phase is thinner and very continuous in the La–Ce containing magnet. The coercivity and the maximum energy product of La–Ce containing magnet increased by 2 kOe and 1.5 MGOe, respecitively.