fmr_power

Stoner.analysis.fitting.models.magnetism.fmr_power(H, H_res, Delta_H, K_1, K_2)[source]

Combine a Lorentzian and differential Lorenztion peak as measured in an FMR experiment.

Parameters
  • H (array)

  • H_res (float) – Resonance field of peak

  • Delta_H (float) – Preak wideth

  • K_1, K_2 (float) – Relative weighting of each component.

Returns

Array of model absorption values.

\(\frac{4 \Delta_{H} K_{1} \left(H - H_{res}\right)}{\left(\Delta_{H}^{2} + 4 \left(H - H_{res} \right)^{2}\right)^{2}} - \frac{K_{2} \left(\Delta_{H}^{2} - 4 \left(H - H_{res}\right)^{2}\right)}{ \left(\Delta_{H}^{2} + 4 \left(H - H_{res}\right)^{2}\right)^{2}}\)