Cost effective modification of SmCo5-type alloys

In the present work we present a preliminary experimental and ab-initio study of a series of compounds with nominal composition Sm1-xMMxCo5-y-zFeyNiz (x = 0 - 0.7; y = 0.5 - 1.5; z = 0.5 - 1). Compounds with MM content up to 50% were successfully synthesized in CaCu5-type structure, retaining uniaxial magnetocrystalline anisotropy. Magnetization values are within the 85 to 50 Am-2/kg range, with Ni content playing a significant role in stabilization of the structure at the cost of magnetization weakening. Theoretical calculations predict higher magnetization values, especially in the case of SmCo2.5Fe1.5Ni compound with a value close to that of SmCo5.& nbsp;(C) 2022 Author(s).All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY)license (http://creativecommons.org/licenses/by/4.0/).