High Curie temperature of Ce-Fe-Si compounds with ThMn12 structure

Journal Article · Thu Jan 15 00:00:00 EST 2015 · Scripta Materialia

DOI:https://doi.org/10.1016/j.scriptamat.2014.10.006· OSTI ID:1211096

Zhou, C; Pinkerton, FE; Herbst, JF

We report the discovery of ternary CeFe(12-x)Si(x)compounds possessing the ThMn12 structure. The samples were prepared by melt spinning followed by annealing. In contrast to other known Ce Fe-based binary and ternary compounds, CeFe12-xSix compounds exhibit exceptionally high Curie temperatures whose values increase with added Si substitution. The highest T. = 583 K in CeFe10Si2 rivals that of the well-established Nd2Fe14B compound. We ascribe the T-c behavior to a combination of Si-induced 3d band structure changes and partial Ce3+ stabilization. (C) 2014 Published by Elsevier Ltd.

• Sponsoring Organization: USDOE Advanced Research Projects Agency - Energy (ARPA-E)
• DOE Contract Number: 0472-1526
• OSTI ID: 1211096
• Journal Information: Scripta Materialia, Vol. 95; ISSN 1359-6462
• Country of Publication: United States
• Language: English