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XRD profile for Ni-Mn-Ga/NaCl(001) composite at room temperature showing one (202) peak of orthorhombic unit cell at 2θ = 43.9° for the film and two reflections belonging to the substrate.
The temperature evolution of FMR spectrum below the Curie temperature. The magnetic field was perpendicular to the film plane. The splitting of FMR signal recoded at 320 K into two Gauss peaks shown in the inset indicates the occurrence of the martensitic transformation.
Temperature dependences of the resonance field for in-plane (○) and out-of-plane (◻) configuration of the external magnetic field. The corresponding values of resonance line width are shown in the inset.
Out-of-plane angular dependence of the resonance field recorded at 293 K. The line drawn through the data is a fit using the expression for magnetic free energy density, Eq. (2) , and M eff = 465 emu/cm3, g = 2.03.
Temperature dependence of the saturation magnetization, M s, measured by magnetometry and the effective magnetization, M eff, obtained from FMR. The extracted value of perpendicular anisotropy field is shown in the inset.
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