CompositePCRmagnet

Description

ZF KuboToyabe when B = 0. A damped cosine precession when B_int>0 .

When B = 0,

A(t)= A_0\left(\frac{1}{3}+\frac{2}{3}\cos(g_\mu B_0t)e^{-\sigma^2 t^2+\frac{2}{5}\Delta^2 t^2}\right) .

When B > 0 ,

A(t) = A_0\left(\frac13+\frac23(1-(\Delta t)^2)e^{-(\Delta t)^2/2}\right)

where,

A_0 is the amplitude,

\sigma (MHz) is the gaussian relaxation rate,

B_0 (G) is the gaussian relaxation rate,

and \Delta is the relaxation rate of the extra term when B>0 .

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

../../_images/CompositePCRmagnet-1.png

Properties (fitting parameters)

Name Default Description
A0 0.2 Amplitude
KTdelta 0.1 KT Relaxation rate
B0 10.0 Local Magnetic Field (G)
Gauss 0.2 Gaussian relaxation rate

Source

Python: CompositePCRmagnet.py (last modified: 2019-11-14)