Abstract
The spectra of X-ray photoelectron spectroscopy (XPS) were measured for Fe16N2(001) single crystal films epitaxially grown by molecular beam epitaxy (MBE). It was found that the binding energy of N-1s (EN1S) of Fe16N2 is lower than that of Fe4N, indicating that the energy level of N-1s electron in Fe16N2 is higher due to the larger value of the electron-electron Coulomb energy within N atom. From this result, it is expected that more electrons transfer from N atoms to N atoms in Fe16N2 than in Fe4 N. It is likely that the N atoms in Fe16N2 act as electron acceptors and this can lead to the nearly full spin polarization in each Fe atoms with a ferromagnetic coupling due to electron hopping.
Original language | English |
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Pages (from-to) | 2921-2923 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 36 |
Issue number | 5 I |
DOIs | |
Publication status | Published - 2000 Sep |
Externally published | Yes |
Event | 2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada Duration: 2000 Apr 9 → 2000 Apr 12 |
Keywords
- Binding energy
- Chemical shift
- Fe-N martensite
- FeN
- FeN
- N concentration
- Saturation magnetization
- X-ray photoelectron spectroscopy
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Physics and Astronomy (miscellaneous)