Back to Search
Start Over
Magnetic anisotropy in spherical Fe16N2 core–shell nanoparticles determined by torque measurements
- Source :
- AIP Advances, Vol 7, Iss 5, Pp 056212-056212-5 (2017)
- Publication Year :
- 2017
- Publisher :
- AIP Publishing LLC, 2017.
-
Abstract
- The magnetic anisotropy energy for core–shell α”-Fe16N2 nanoparticles was evaluated by the rotational hysteresis loss obtained from magnetic torque measurements. The saturation magnetization of the α”-Fe16N2 core was deduced from volume fractions of α”-Fe16N2 determined by an analysis of a low-temperature Mossbauer spectrum. The saturation magnetization and the anisotropy energy were found to be 234 emu/cc and 6.9 Merg/cm3, respectively. These values coincide with those of bulk-like single-phase α”-Fe16N2 particles. This crystalline anisotropy is still smaller than the shape anisotropy of the thin films (2πMs2=20 Merg/cm3), and a perpendicular magnetic state is not expected for the thin-film form.
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 7
- Issue :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.2e2508d9cae4405b51c8fd1290943ff
- Document Type :
- article
- Full Text :
- https://doi.org/10.1063/1.4974276