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Magnetic hardening of Ce1+xFe11-yCoyTi with ThMn12 structure by melt spinning

TitleMagnetic hardening of Ce1+xFe11-yCoyTi with ThMn12 structure by melt spinning
Publication TypeJournal Article
Year of Publication2015
AuthorsZhou, C, Sun, KW, Pinkerton, FE, Kramer, MJ
JournalJournal of Applied Physics
Date Published05
Type of ArticleArticle
ISBN Number0021-8979
Accession NumberWOS:000354984100088
Keywordsfe-mo alloys, high-energy product, nitrides, permanent-magnets, ti

d y = 0 1.5. It was found that Co substitution effectively enhances all hard magnetic properties, although the values are still lower than those predicted from the intrinsic magnetic properties. Specifically, Tc increases from 210 degrees C to 285-350 degrees C; 4 pi M-19 (magnetization at 19 kOe) from 8.9 kG to 10.5-11.5 kG, remanence B-r from 3.1 kG to 4.1-4.5 kG, and most importantly, H-ci from 1.1 kOe to 1.5 kOe. As a result, the room temperature energy product (BH)(max) has been increased by over 100% from 0.7 MGOe in Ce1.1Fe11Ti to 1.5 MGOe in Ce1.05Fe9.75Co1.25Ti. Microscopy analysis indicates that the addition of Co refines the grain size and promotes chemical homogeneity at the microscopic scale. The beneficial effect of Co on the microstructure contributes to the improved hard magnetic properties. (C) 2015 AIP Publishing LLC.

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