grid_1.mx3

Nx:= 1000
Ny:= 150 			
Nz:= 26
setGridSize(Nx, Ny, Nz)
setCellSize(4e-9, 4e-9, 4e-9)


Aex     = 13e-12
Xi      = 0.1
alpha   = 0.02 

distance:= 40
xoffset:= 20+37.5
nanoislandlength := 400

angle:= 360
ydim:=40e-9
zdim:=40e-9
translation := -(22.5 + 25)*1e-9
ytranslation:= (nanoislandlength + 40)*1e-9

bigR:= 20e-9			//radius of cylinder or our cuboid
currentdensity := 5*1e12

timestep := 100e-12
totaltime := 4000e-12

//Bxangle:= 1 //in degrees
//Bmag := 0.005 //Tesla

//current carrying wire
wireDW:=cuboid(4000e-9,ydim,zdim).transl(0,0,0)

//nanoisland circular ends
semicircle1:= cylinder(75e-9, 5e-9).transl(0, ((nanoislandlength-75)*0.5)*1e-9, 0)
semicircle2:= cylinder(75e-9, 5e-9).transl(0,-((nanoislandlength-75)*0.5)*1e-9, 0)
nanoisland:= cuboid(75e-9, (nanoislandlength-75)*1e-9, 5e-9).add(semicircle1).add(semicircle2)





setGeom(wireDW)
saveas(geom, "WireCross") 



defRegion(1,wireDW)
defRegion(2, cuboid(40e-9,ydim,zdim).transl(-1980e-9,0,0))
defRegion(3, cuboid(40e-9,ydim,zdim).transl(1980e-9,0,0))





m.setRegion(1, twodomain(1, 0, 0, 0, 0, -1, -1, 0, 0))
m.setRegion(2, uniform(1,0,0))
m.setRegion(3, uniform(-1,0,0))







Msat.setRegion(1, 800e3)
Msat.setRegion(2, 800e3)
Msat.setRegion(3, 800e3)



frozenspins.setRegion(2,1)
frozenspins.setRegion(3,1)


saveas(m, "geometry2")


// Remove surface charges from left (mx=1) and right (mx=-1) sides to mimic infinitely long wire. We have to specify the region (0) at the boundaries.
BoundaryRegion := 1
MagLeft        := 1
MagRight       := -1
ext_rmSurfaceCharge(BoundaryRegion, MagLeft, MagRight)

saveas(m, "Init")
saveas(B_ext, "afterSC")

B_ext = vector(0, 0, -0.01)
Minimize()
B_ext = vector(0,0,0)

autosave(m, 100e-12)
Run(400e-12)