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click on the similar picture below to download the mathematica file (nb extension)

 

Angular dependence of the ferromagnetic resonance field and linewidth

• Description : This program calculates the out-of-plane angular dependence of the full linewidth at half power and of the resonance field.
  There are several contributions to the FMR linewidth originating from imperfections at the sample surface, to the Gilbert damping, the method of measurements, the two-magnon scattering... The two first contributions are referred as the extrinsic and intrinsic contributions to the linewidth. For the extrinsic part, the broadening is the additional effect of D4pM_eff, the related to the linewidth broadening from variations in amplitude and of Dq to the variations in direction. The intrinsic term is directly proportional to the Gilbert damping constant G. The angular dependence of the linewidth enables to separate the two contributions to the linewidth using best fit of the data. For more precision, ref[Mizukami, PRB66].

Stoner and Wohlfarth model: minimum of magnetic energy

• Description :  This program calculates the out-of-plane angular dependence of the full linewidth at half power and of the resonance field.

Mathematica 3D plot

 

• Description :  Short script to plot AFM images with Mathematica
  

 

Angle of magnetization precession versus the bias field and the ac field

 

• Description : Estimate the angle of precession of the magnetization under a ac field.
  

 

File manipulation - IV curve and matrix generation

 

• Description : Generate a matrix file from a number of files.
  Specifically: 10 files made of 3 columns : Current (I), Bias Voltage (V) and Gate Voltage (Vg). Each files contains I(V) for a given Vg. The files are copied into a single file where the first row gives Vg and the first column I. The other column contains the V data for given Vg.