Enhanced coercivity in α-(Fe,Co)/(Nd,Pr)2Fe14B nanocomposite magnets via interfacial modification

Wei Li, Lanlan Li, Xiaohong Li, Hongyu Sun, Xiangyi Zhang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We have prepared α-(Fe,Co)/(Nd,Pr)2Fe14B nanocomposite magnets having a high coercivity Hc = 7.5 kOe and a large energy product ( BH )max = 22.7 MGOe by interfacial modification using an intergranular amorphous phase, as compared with the corresponding values obtained without the intergranular phase, Hc = 5.5 kOe and ( BH ) max = 16.1 MGOe. The enhanced coercivity is attributed to the increase in the nucleation field for magnetization reversal due to interfacial modification. This demonstrates a counter-intuitive approach for enhancing the magnetic properties of nanocomposite magnets.
Original languageEnglish
Article number155003
JournalJournal of Physics D: Applied Physics
Volume41
Issue number15
Number of pages5
ISSN0022-3727
DOIs
Publication statusPublished - 2008
Externally publishedYes

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