| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1614974 | Journal of Alloys and Compounds | 2013 | 4 Pages |
The temperature dependence of the resonance frequency of 59Co NMR in a ferromagnetic Heusler alloy, Co2FeSi, in zero applied field is reported. The temperature dependence in the range 4.2–300 K has been found to be well described by ν=ν(0)(1-BT3/2)ν=ν(0)(1-BT3/2) with ν(0)=139.1MHz, and B=5.32×10-6K-3/2, which corresponds to the spin-wave stiffness constant D of 2.60 m eV nm2. The behavior is roughly in agreement with the temperature dependence of the macroscopic magnetization and is consistent with the dominance of the spin-wave excitations in Co2FeSi at low temperatures.
► The temperature dependence of the resonance frequency of 59Co is reported. ► The temperature dependence has been found to be well described by T3/2T3/2-law. ► The dominance of spin-wave excitations in Co2FeSi at low temperature was confirmed. ► The present results are in accord with macroscopic magnetization measurements. ► The present results are inconsistent with Brillouin light scattering experiments.
