A systematic study of the angular and temperature dependencies of the ferromagnetic resonance (FMR) of manganese germanide Mn5Ge3 grown on Ge(111) by solid phase epitaxy is reported. The FMR measurements performed in the out-of-plane geometry show that an out-of-plane anisotropy contribution exists in this material, and it increases with decreasing temperatures. However, the perpendicular magnetization curves imply that the shape anisotropy determines the orientation of the magnetization at any temperature. It is also shown that the Callen-Callen law cannot be used to describe the temperature dependence of the perpendicular anisotropy in Mn5Ge3. Such temperature dependence of the magnetocrystalline anisotropy shows the invalidity of the single-ion anisotropy model for Mn5Ge3.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2014 Dec 10|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics