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AFMZF

Description

ZF oscillation for aligned Anti-ferromagnetic magnetic sample with Gaussian dephasing

\[A(t) = \frac{A_0}{2}((1-a_1)+a_1\cos(\omega_1t+\phi))+(1-a_2)+a_2\cos(\omega_2t+\phi))\]

where,

\[a_1 =\sin^2\theta ,\]

\[\omega = 2\pi\nu ,\]

\(\nu\) is the ZF frequency (MHz),

\(\sigma\) is the Gaussian relaxation for oscillatory component,

\(\theta\) is the angle of internal field w.r.t. to applied field,

and \(\phi\) is the phase.

(Source code, png, hires.png, pdf)

Properties (fitting parameters)

Name	Default	Description
A0	0.2	Amplitude
Freq	1.0	ZF Frequency (MHz)
Angle	50.0	Angle of internal field w.r.t. to applied field (degrees)
Sigma	0.2	Gaussian relaxation for oscillatory component
Phi	0.0	Phase (rad)

References

[1] F.L. Pratt, Physica B 289-290, 710 (2000).

Categories: FitFunctions | Muon\MuonSpecific

Source

Python: AFMZF.py