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Title: Magnetic properties of bulk, and rapidly solidified nanostructured (Nd1-xCex)2Fe14-yCoyB ribbons

Journal Article · · Acta Materialia

Magnetic properties of Ce and Co co-doped (Nd1-xCex)2Fe14-yCoyB compounds have been investigated both in bulk polycrystalline and rapidly solidified nanostructured ribbon forms. For certain Ce concentrations the materials exhibit spin re-orientation transitions below 140 K. The Curie temperatures, saturation magnetizations, and other magnetic properties relevant for applications as permanent magnets are controlled by Ce and Co substitutions for Nd and Fe, respectively. Most importantly, the results show that Ce, Co co-doped compounds are excellent replacements for several Dy-based high performance permanent magnets (dysprosium is one of the critical elements and is, therefore, in short supply). As a result, the high temperature (>375 K) magnetic properties for Nd–Ce–Fe–Co–B based alloys show promise not only as a replacement for Dy-doped Nd2Fe14B permanent magnets, but the new alloys also require significantly lower amounts of Nd, which too is the critical element that can be replaced by a more abundant Ce.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1227448
Alternate ID(s):
OSTI ID: 1358701
Report Number(s):
IS-J-8781; PII: S1359645415007387
Journal Information:
Acta Materialia, Vol. 103, Issue C; ISSN 1359-6454
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 93 works
Citation information provided by
Web of Science

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Cited By (8)

Effect of Ga addition on the microstructure and magnetic properties of melt-spun (Nd 0.8 Ce 0.2 ) 13.8 Fe 68.96− x Ga x Co 11.49 B 5.74 alloys journal July 2019
Manipulating Ce Valence in RE2Fe14B Tetragonal Compounds by La-Ce Co-doping: Resultant Crystallographic and Magnetic Anomaly journal July 2016
The corrosion mechanism of the sintered (Ce, Nd)-Fe-B magnets prepared by double main phase and single main phase approaches journal May 2018
Magnetic hardening of Nd-Ce-Fe-B films with high Ce concentration journal August 2018
Coercivity enhancement and mechanism in a high Ce-containing Nd–Ce–Fe–B film by the design of a diffusion layer journal January 2019
Computational analysis of microstructure-coercivity relation in multi-main-phase Nd–Ce–Fe–B magnets journal January 2019
Understanding the element segregation and phase separation in the Ce-substituted Nd-(Fe,Co)-B based alloys journal May 2018
Synergetic Effect of Dy2O3 and Ca Co-Dopants towards Enhanced Coercivity of Rare Earth Abundant RE-Fe-B Magnets journal December 2017