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Make disk in oommf

  1. Jul 15, 2016 #1
    Hi,
    I'm just starting to use oommf. I wish to see the evolution of the magnetization of a dot, which has uniaxial anisotropy. Command lines I use are

    #Geometry
    proc Disco {x y z} {
    global Diametro Ms
    set rx [expr {2*$x-1}]
    set ry [expr {2*$y-1}]

    if {$rx*$rx+$ry*$ry>$Diametro*$Diametro/4.} {
    return 0
    }
    return $Ms
    }

    #Atlas
    Specify Oxs_BoxAtlas:atlas [subst {
    xrange {0 $Diametro}
    yrange {0 $Diametro}
    zrange {0 $Altura}
    }]

    #Mesh

    Specify Oxs_RectangularMesh:mesh [subst {
    cellsize {$cellsize $cellsize $cell2}
    atlas :atlas
    }]

    Specify Oxs_UniaxialAnisotropy {
    axis { 0 0 1 }
    K1 2e5
    }


    Specify Oxs_UniformExchange [subst {
    A 1.6e-11
    }]

    Specify Oxs_CGEvolve:evolve {}

    Specify Oxs_MinDriver [subst {
    evolver Oxs_CGEvolve
    stopping_mxHxm 0.1
    mesh :mesh
    Ms { Oxs_ScriptScalarField {
    atlas :atlas
    script {Disco 2.2e5}
    }}
    m0 { Oxs_RandomVectorField {
    min_norm 1.0
    max_norm 1.0
    }}
    }]

    but when the data stored mmarchive through, the file contains only zeros. Why?

    Thanks
     
  2. jcsd
  3. Jul 20, 2016 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
     
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