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

Autor:	Jan F. Herbst, Frederick E. Pinkerton, Chen Zhou
Rok vydání:	2015
Předmět:	Materials science Condensed matter physics Annealing (metallurgy) Mechanical Engineering Metals and Alloys Condensed Matter Physics Crystallography Mean field theory Mechanics of Materials Curie Curie temperature General Materials Science Melt spinning Electronic band structure Ternary operation
Zdroj:	Scripta Materialia. 95:66-69
ISSN:	1359-6462
DOI:	10.1016/j.scriptamat.2014.10.006
Popis:	We report the discovery of ternary CeFe12−xSix 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 Tc = 583 K in CeFe10Si2 rivals that of the well-established Nd2Fe14B compound. We ascribe the Tc behavior to a combination of Si-induced 3d band structure changes and partial Ce3+ stabilization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a8837dc5ec5c21982145cb57a9aa363f https://doi.org/10.1016/j.scriptamat.2014.10.006 Zobrazit plný text záznamu Full Text from ScienceDirect