Difference between revisions of "Kerr - July 19, 2016"

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With the Lock-in Amplifier system and the two equations provided in the Hinds instrument MOKE manual I am able to observe a Kerr θ and ε on the Lock-in Amplifiers!!!
 
With the Lock-in Amplifier system and the two equations provided in the Hinds instrument MOKE manual I am able to observe a Kerr θ and ε on the Lock-in Amplifiers!!!
 +
 +
 +
[[file:KErrRotation.jpeg|thumb|Although the fit is far from perfect, some setup optimization may help us observe a more clear signal]]
 +
[[file:EllipticityKerr.jpeg|thumb|This quite smooth curve agrees with literature in that the ellipticity is more sensitive to change in magnetization of foil.]]

Revision as of 17:27, 19 July 2016

B field equation as a function of distance in mm from foil surface ---->

  • y = -1.186ln(x) + 3.9958
  • r^2 value of R² = 0.9831

media:Bfieldfunction.xlsx

Milestone moment

With the Lock-in Amplifier system and the two equations provided in the Hinds instrument MOKE manual I am able to observe a Kerr θ and ε on the Lock-in Amplifiers!!!


Although the fit is far from perfect, some setup optimization may help us observe a more clear signal
This quite smooth curve agrees with literature in that the ellipticity is more sensitive to change in magnetization of foil.