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Domain dynamics in Co/Pt/Co/Pt/Co/IrMn

Domain dynamics in Co/Pt/Co/Pt/Co/IrMn. M. Czapkiewicz.

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Domain dynamics in Co/Pt/Co/Pt/Co/IrMn

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  1. Domain dynamics in Co/Pt/Co/Pt/Co/IrMn M. Czapkiewicz

  2. New domain nucleation:N(t)=N0(1-exp(-Rt))Fatuzzo: cylindric domains nucleation and growth B(t)=exp(-2k2(1-(1 -(Rt+1/k) +0.5(Rt+1/k)2 –e-Rt(1-1/k) –0.5k2(1-Rt)))where k=v/Rr,v i R increase with z H, kconstR=R0exp[-(WN-2HMSVN)/kBT] v=v0exp[-(WP-2HMSVP)/kBT]

  3. k: real time

  4. k: reduced time

  5. #26 backward #26 forward

  6. #26 backward #26 forward

  7. #26 real time

  8. #31 forward – without dead time correction

  9. #31 forward – dead time correction

  10. #31 forward – fit after dead time correction Kerr video: for H=21.1mT v=10mm/s

  11. #31 forward – before dead time correction – impossible to fit

  12. #31 backward – fit after dead time correction Kerr video: for H=7.8mT v=50mm/s

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