Abstract
Microstructure of a nanocrystalline soft magnetic Fe85Si2B8P4Cu1 alloy (NANOMET®) was investigated by the state of the art spherical aberration-corrected TEM/STEM. Observation by TEM shows that the microstructure of NANOMET® heat treated at 738 K for 600 s which exhibits the optimum soft magnetic properties has homogeneously distributed bcc-Fe nanocrystallites with the average grain size of 30 nm embedded in an amorphous matrix. Elemental mappings indicate that P is excluded from bcc-Fe grains and enriched outside the grains, which causes to retard the grain growth of bcc-Fe crystallites. The aberration-corrected STEM-EDS analysis with the ultrafine electron probe successfully proved that Cu atoms form nanometre scale clusters inside and/or outside the bcc-Fe nanocrystallites.
Original language | English |
---|---|
Pages (from-to) | 277-284 |
Number of pages | 8 |
Journal | Philosophical Magazine Letters |
Volume | 95 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2015 May 4 |
Keywords
- Cu cluster
- TEM/STEM
- microstructure characterization
- nanocrystalline materials
ASJC Scopus subject areas
- Condensed Matter Physics