1993/11/16 by C. Maury, Claire Maury, L. Rabenberg +2
Materials Science · Physics and Astronomy · #Magnetic Properties and Applications #Magnetic Properties of Alloys #Magnetic properties of thin films
paper · doi:10.1002/pssa.2211400104
crossref issued 1993/11/16 · crossref published 1993/11/16 · crossref published-print 1993/11/16 · openalex publication_date 1993/11/16 · crossref created 2007/01/12 · crossref deposited 2021/07/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/27 · crossref indexed 2026/07/27
The alloys with composition around Sm11.5Co58.4Fe22.5Cu5.3Zr2.4 (at%) present hard magnet properties when their microstructure consists of a network of cells based on Sm2(Co, Fe)17, limited by boundaries based on Sm(Co, Cu)5 and cut by platelets based on (Sm, Zr)Co3. The genesis of this microstructure is studied by transmission electron microscopy of heat-treated specimens. The fractions and compositions of the phases formed are evaluated from atomic balance equations. The microstructure forms by nucleation growth of ordered R2:17 cells in the 1:7 matrix, then by nucleation of 1:3 platelets on the twin boundaries in R2:17. The processes are likely limited by diffusion.