Download presentation
Presentation is loading. Please wait.
1
Domain dynamics in Co/Pt/Co/Pt/Co/IrMn M. Czapkiewicz
2
New domain nucleation: N(t)=N 0 (1-exp(-Rt)) Fatuzzo: cylindric domains nucleation and growth B(t)= exp ( -2k 2 ( 1-(1 -(Rt+1/k) +0.5(Rt+1/k) 2 –e -Rt (1-1/k) –0.5k 2 (1-Rt) ) ) where k=v/Rr, v i R increase with z H, k const R=R 0 exp [ -(W N -2HM S V N )/k B T ] v=v 0 exp [ -(W P -2HM S V P )/k B T ]
![New domain nucleation: N(t)=N 0 (1-exp(-Rt)) Fatuzzo: cylindric domains nucleation and growth B(t)= exp ( -2k 2 ( 1-(1 -(Rt+1/k) +0.5(Rt+1/k) 2 –e -Rt (1-1/k) –0.5k 2 (1-Rt) ) ) where k=v/Rr, v i R increase with z H, k const R=R 0 exp [ -(W N -2HM S V N )/k B T ] v=v 0 exp [ -(W P -2HM S V P )/k B T ]](http://images.slideplayer.com./1/416745/slides/slide_2.jpg "New domain nucleation: N(t)=N 0 (1-exp(-Rt)) Fatuzzo: cylindric domains nucleation and growth B(t)= exp ( -2k 2 ( 1-(1 -(Rt+1/k) +0.5(Rt+1/k) 2 –e -Rt (1-1/k) –0.5k 2 (1-Rt) ) ) where k=v/Rr, v i R increase with z H, k const R=R 0 exp [ -(W N -2HM S V N )/k B T ] v=v 0 exp [ -(W P -2HM S V P )/k B T ]")
3
k: real time
4
k: reduced time
6
#26 backward #26 forward
7
#26 backward #26 forward
8
#26 real time
9
#31 forward – without dead time correction
10
#31 forward – dead time correction
11
#31 forward – fit after dead time correction Kerr video: for H=21.1mT v=10 m/s
12
#31 forward – before dead time correction – impossible to fit
13
#31 backward – fit after dead time correction Kerr video: for H=7.8mT v=50 m/s
Similar presentations
