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• W4366236997 abstract "Abstract The development of low‐cost RE‐Fe‐B sintered magnets with large La/Ce content is of great significance for the balanced utilization of rare earth (RE) resources, but it is limited by reduced magnetic properties. In this work, the coercivity ( H cj ), remanence ( B r ), maximum energy product [( BH ) max ], and temperature stability are simultaneously enhanced for magnets with LaCe accounting for 40 wt% of the total RE. The synergistic regulation of the REFe 2 phase, Ce‐valence, and grain boundaries (GBs) in RE‐Fe‐B sintered magnets is realized for the first time by introducing appropriate La elements. The La elements inhibit the generation of the REFe 2 phase and tend to stay in the triple junctions, promoting the segregation of the RE/Cu/Ga elements and contributing to the formation of Ce/Nd/Cu/Ga‐rich continuous thicker lamellar GBs, and as a result, weakening the detrimental effect on HA caused by La element substitution and enhancing H cj . In addition, partial La atoms entering the RE 2 Fe 14 B phase are beneficial for improving the B r and temperature stability of the magnets and promoting the Ce 3+ ion ratio, which also provides additional benefit for B r . The findings provide an effective and feasible way to co‐enhance the remanence and coercivity of RE‐Fe‐B sintered magnets with high Ce content." @default.
• W4366236997 created "2023-04-20" @default.
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• W4366236997 date "2023-04-17" @default.
• W4366236997 modified "2023-10-14" @default.
• W4366236997 title "Strategy for Co‐Enhancement of Remanence–Coercivity of RE‐Fe‐B Sintered Magnets with High Ce‐Content: Appropriate La Substitution" @default.
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• W4366236997 doi "https://doi.org/10.1002/advs.202301312" @default.
• W4366236997 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37069783" @default.
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