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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>mumax3</title>
<link rel="stylesheet" href="http://yui.yahooapis.com/pure/0.3.0/pure-min.css">
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
<p style="font-size: 16; color: red"><b>Warning! This is the API for mumax3.9c, which is no longer supported. If you like to use mumax3, we strongly recommend to use <a href="index.html">mumax3.10</a>.</b></p>
<h1> mumax 3.9c API </h1>
This is a complete overview of all available functions for writing an input script.
<hr/><h1> Syntax </h1>
<p>
The mumax<sup>3</sup> input syntax is a subset of <a href=http://golang.org>Go</a>'s syntax, somewhat similar to C. It is case-independent however, so msat is the same as Msat or MSAT.</p>
<h3>Defining variables</h3>
New variables are declared using <code>:=</code>. Variables have a fixed type, inferred from the declaration's right-hand-side. Assigning to existing variables is done using <code>=</code>. E.g.:
<pre><code>i := 7 // defines a new variable i, type automatically detected to be int
print(i) // now we can use i
i = 5 // assign new value, don't use ':=' (attempt to re-declare)
str := "hello" // defines str, type automatically is string
//str = 1 // would fail, cannot assign int to string
</code></pre>
<h3>Arithmetic</h3>
Most common arithmetic operations are possible. Also Go's <a href=http://golang.org/pkg/math>math</a> library and some common constants are available. For raise-to-the-power, pow(x,y) should be used.
<pre><code>x := pi*(3+4)/5
x = pow(x, 3)
x++
y := abs(cbrt(cosh(erf(erfc(gamma(J0(Y0(2))))))))
</code></pre>
<h3>Control structures</h3>
Loops are possible as well:
<pre><code>for i:=0; i<10; i++{
print(i)
}
</code></pre>
<h3>Implicit functions</h3>
Some of the API features accept a function as argument (e.g.: <code>RunWhile(func()bool)</code>, or all input parameters). In that case, and <i>only</i> in this case, the argument is implicitly converted to a function, which is re-evaluated each time it's needed. E.g.:
<pre><code>value := sin(pi*t) // value is a float64, RHS evaluated only once
Msat = value // time-independent Msat
</code></pre>
versus:
<pre><code>Msat = sin(pi*t) // RHS converted to function, re-evaluted every time
</code></pre>
<hr/><h1> Setting the mesh size</h1>
The simulation mesh defines the size of the box around your magnet. It should be set at the beginning of the script. The number of cells should preferably be powers of two, or at least have small prime factors (2,3,5,7). E.g.:
<pre><code>Nx := 128
Ny := 64
Nz := 2
sizeX := 500e-9
sizeY := 250e-9
sizeZ := 10e-9
SetGridSize(Nx, Ny, Nz)
SetCellSize(sizeX/Nx, sizeY/Ny, sizeZ/Nz)
</code></pre>
<h2> Periodic boundary conditions </h2>
Optionally, periodic boundary conditions can be enabled:
<pre><code>SetPBC(5, 0, 0) // 5 extra images on left and right sides.
SetGridSize(128, 64, 1)
SetCellSize(5e-9, 5e-9, 5e-9)
</code></pre>
Setting a nonzero PBC value in a direction enables wrap-around in that direction. The precise value passed determines how many repetitions are seen by the demag field. E.g., in the above example the demag field behaves as if 5 repetitions are present to the left and to the right side. Choosing a large number may cause long initialization time.
<h2> Resizing the mesh </h2>
The mesh can be changed at any later time in the simulation. This will cause the magnetization to be stretched onto the new mesh if needed, and the geometry and regions to be re-calculated. After resize some cells which had zero magnetization may now fall inside the magnet geometry, they will be initialized to random magnetization.
<p><span style="color:#000088; font-size:1.3em"> <b>SetCellSize</b>(float64, float64, float64) </span>
<p style="margin-left:40px"> Sets the X,Y,Z cell size in meters </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example1">[1]</a>
<a href="examples.html#example2">[2]</a>
<a href="examples.html#example3">[3]</a>
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example5">[5]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example9">[9]</a>
<a href="examples.html#example10">[10]</a>
<a href="examples.html#example11">[11]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example13">[13]</a>
<a href="examples.html#example14">[14]</a>
<a href="examples.html#example15">[15]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>SetGridSize</b>(int, int, int) </span>
<p style="margin-left:40px"> Sets the number of cells for X,Y,Z </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example1">[1]</a>
<a href="examples.html#example2">[2]</a>
<a href="examples.html#example3">[3]</a>
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example5">[5]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example9">[9]</a>
<a href="examples.html#example10">[10]</a>
<a href="examples.html#example11">[11]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example13">[13]</a>
<a href="examples.html#example14">[14]</a>
<a href="examples.html#example15">[15]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>SetMesh</b>(int, int, int, float64, float64, float64, int, int, int) </span>
<p style="margin-left:40px"> Sets GridSize, CellSize and PBC in once </p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>SetPBC</b>(int, int, int) </span>
<p style="margin-left:40px"> Sets number of repetitions in X,Y,Z </p>
</p>
<hr/><h1> Setting a geometry </h1>
Optionally a magnet Shape other than the full simulation box can be specified. One can specify primitive shapes, constructed at the origin (box center), and translate/rotate them if needed. All positions are specified in meters and the origin lies in the center of the simulation box. E.g.:
<pre><code> SetGeom(cylinder(400e-9, 20e-9).RotX(45*pi/180).Transl(1e-6,0,0))
</code></pre>
<p><span style="color:#000088; font-size:1.3em"> <b>SetGeom</b>(Shape) </span>
<p style="margin-left:40px"> Sets the geometry to a given shape </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example9">[9]</a>
<a href="examples.html#example11">[11]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example14">[14]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>EdgeSmooth</b> </span>
<p style="margin-left:40px"> Geometry edge smoothing with edgeSmooth^3 samples per cell, 0=staircase, ~8=very smooth </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Cell</b>(int, int, int) Shape </span>
<p style="margin-left:40px"> Single cell with given integer index (i, j, k) </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example1">[1]</a>
<a href="examples.html#example2">[2]</a>
<a href="examples.html#example3">[3]</a>
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example5">[5]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example9">[9]</a>
<a href="examples.html#example10">[10]</a>
<a href="examples.html#example11">[11]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example13">[13]</a>
<a href="examples.html#example14">[14]</a>
<a href="examples.html#example15">[15]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Circle</b>(float64) Shape </span>
<p style="margin-left:40px"> 2D Circle with diameter in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example12">[12]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Cuboid</b>(float64, float64, float64) Shape </span>
<p style="margin-left:40px"> Cuboid with sides in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Cylinder</b>(float64, float64) Shape </span>
<p style="margin-left:40px"> 3D Cylinder with diameter and height in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example5">[5]</a>
<a href="examples.html#example6">[6]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Ellipse</b>(float64, float64) Shape </span>
<p style="margin-left:40px"> 2D Ellipse with axes in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example14">[14]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Ellipsoid</b>(float64, float64, float64) Shape </span>
<p style="margin-left:40px"> 3D Ellipsoid with axes in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>GrainRoughness</b>(float64, float64, float64, int) Shape </span>
<p style="margin-left:40px"> Grainy surface with different heights per grain </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>ImageShape</b>(string) Shape </span>
<p style="margin-left:40px"> Use black/white image as shape </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Layer</b>(int) Shape </span>
<p style="margin-left:40px"> Single layer (along z), by integer index starting from 0 </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example13">[13]</a>
<a href="examples.html#example14">[14]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Layers</b>(int, int) Shape </span>
<p style="margin-left:40px"> Part of space between cell layer1 (inclusive) and layer2 (exclusive), in integer indices </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Rect</b>(float64, float64) Shape </span>
<p style="margin-left:40px"> 2D rectangle with size in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example9">[9]</a>
<a href="examples.html#example11">[11]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example15">[15]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Square</b>(float64) Shape </span>
<p style="margin-left:40px"> 2D square with size in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example6">[6]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Universe</b>() Shape </span>
<p style="margin-left:40px"> Entire space </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>XRange</b>(float64, float64) Shape </span>
<p style="margin-left:40px"> Part of space between x1 and x2, in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example7">[7]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>YRange</b>(float64, float64) Shape </span>
<p style="margin-left:40px"> Part of space between y1 and y2, in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>ZRange</b>(float64, float64) Shape </span>
<p style="margin-left:40px"> Part of space between z1 and z2, in meter </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( Shape ) Intersect( Shape ) Inverse( ) Repeat( float64 float64 float64 ) RotX( float64 ) RotY( float64 ) RotZ( float64 ) Scale( float64 float64 float64 ) Sub( Shape ) Transl( float64 float64 float64 ) Xor( Shape )
</span> </p>
</p>
<hr/><h1> Defining material regions </h1>
Optionally, up to 256 material regions can be defined. Since each cell is made from one material, it is associated with exactly one region. So <em>regions can not overlap</em>. Each cell is assigned material region 0 by default. It's a good idea to output <code>regions</code> to verify whether each cell is assigned to the intended region. Each region can have its own material parameters, and we can output averages over each region. E.g.:
<pre><code>DefRegion(1, circle(1e-6))
DefRegion(0, circle(1e-6).Inverse()) // redundant
save(regions)
Msat.SetRegion(1, 800e6)
tableAdd(m.Region(1)) // add average m over region 1 to table
</code></pre>
<p><span style="color:#000088; font-size:1.3em"> <b>DefRegion</b>(int, Shape) </span>
<p style="margin-left:40px"> Define a material region with given index (0-255) and shape </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example13">[13]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>DefRegionCell</b>(int, int, int, int) </span>
<p style="margin-left:40px"> Set a material region in one cell by index </p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>regions</b> </span>
<p style="margin-left:40px"> Outputs the region index for each cell </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Average( ) GetCell( int int int ) Gpu( ) HostArray( ) HostList( ) LoadFile( string ) SetCell( int int int int )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example12">[12]</a>
</p>
</p>
<hr/><h1> Initial magnetization </h1>
The initial magnetization is set by assigning a <code>Config</code> to m, setting it in separate regions, or by loading a file directly.
<pre><code>m = uniform(1, 0, 0)
m.SetRegion(1, vortex(1, 1))
m.LoadFile("config.ovf")
</code></pre>
<p><span style="color:#000088; font-size:1.3em"> <b>m</b> </span>
<p style="margin-left:40px"> Reduced magnetization (unit length) </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Average( ) Buffer( ) Comp( int ) GetCell( int int int ) LoadFile( string ) Region( int ) Set( Config ) SetArray( Slice ) SetCell( int int int data.Vector ) SetInShape( Shape Config ) SetRegion( int Config ) TableData( )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example1">[1]</a>
<a href="examples.html#example2">[2]</a>
<a href="examples.html#example3">[3]</a>
<a href="examples.html#example4">[4]</a>
<a href="examples.html#example5">[5]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example9">[9]</a>
<a href="examples.html#example10">[10]</a>
<a href="examples.html#example11">[11]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example13">[13]</a>
<a href="examples.html#example14">[14]</a>
<a href="examples.html#example15">[15]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Antivortex</b>(int, int) Config </span>
<p style="margin-left:40px"> Antivortex magnetization with given circulation and core polarization </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>BlochSkyrmion</b>(int, int) Config </span>
<p style="margin-left:40px"> Bloch skyrmion magnetization with given chirality and core polarization </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example5">[5]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>NeelSkyrmion</b>(int, int) Config </span>
<p style="margin-left:40px"> Néél skyrmion magnetization with given charge and core polarization </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example5">[5]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>RandomMag</b>() Config </span>
<p style="margin-left:40px"> Random magnetization </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example3">[3]</a>
<a href="examples.html#example5">[5]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>RandomMagSeed</b>(int) Config </span>
<p style="margin-left:40px"> Random magnetization with given seed </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>TwoDomain</b>(float64, float64, float64, float64, float64, float64, float64, float64, float64) Config </span>
<p style="margin-left:40px"> Twodomain magnetization with with given magnetization in left domain, wall, and right domain </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example5">[5]</a>
<a href="examples.html#example10">[10]</a>
<a href="examples.html#example11">[11]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Uniform</b>(float64, float64, float64) Config </span>
<p style="margin-left:40px"> Uniform magnetization in given direction </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example1">[1]</a>
<a href="examples.html#example2">[2]</a>
<a href="examples.html#example5">[5]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example13">[13]</a>
<a href="examples.html#example14">[14]</a>
<a href="examples.html#example15">[15]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>Vortex</b>(int, int) Config </span>
<p style="margin-left:40px"> Vortex magnetization with given circulation and core polarization </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example5">[5]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example9">[9]</a>
<a href="examples.html#example12">[12]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>VortexWall</b>(float64, float64, int, int) Config </span>
<p style="margin-left:40px"> Vortex wall magnetization with given mx in left and right domain and core circulation and polarization </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Add( float64 Config ) RotZ( float64 ) Scale( float64 float64 float64 ) Transl( float64 float64 float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example5">[5]</a>
</p>
</p>
<hr/><h1> Material parameters </h1>
Assigning to a material parameter sets a value in all regions. E.g.:
<pre><code>Msat = 800e3
AnisU = vector(1, 0, 0)
</code></pre>
When regions are defined, they can also be set region-wise:
<pre><code>Msat.SetRegion(0, 800e3)
Msat.SetRegion(1, 540e3)
</code></pre>
Material parameters can be functions of time as well. E.g.:
<pre><code>f := 500e6
Ku1 = 500 * sin(2*pi*f*t)
</code></pre>
<p><span style="color:#000088; font-size:1.3em"> <b>Aex</b> </span>
<p style="margin-left:40px"> Exchange stiffness (J/m) </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Average( ) GetRegion( int ) IsUniform( ) Region( int ) Set( float64 ) SetRegion( int ScalarFunction ) SetRegionFuncGo( int func() float64 ) SetRegionValueGo( int float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example1">[1]</a>
<a href="examples.html#example2">[2]</a>
<a href="examples.html#example3">[3]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example9">[9]</a>
<a href="examples.html#example10">[10]</a>
<a href="examples.html#example11">[11]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example13">[13]</a>
<a href="examples.html#example14">[14]</a>
<a href="examples.html#example15">[15]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>alpha</b> </span>
<p style="margin-left:40px"> Landau-Lifshitz damping constant </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Average( ) GetRegion( int ) IsUniform( ) Region( int ) Set( float64 ) SetRegion( int ScalarFunction ) SetRegionFuncGo( int func() float64 ) SetRegionValueGo( int float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example1">[1]</a>
<a href="examples.html#example6">[6]</a>
<a href="examples.html#example7">[7]</a>
<a href="examples.html#example8">[8]</a>
<a href="examples.html#example10">[10]</a>
<a href="examples.html#example11">[11]</a>
<a href="examples.html#example12">[12]</a>
<a href="examples.html#example14">[14]</a>
<a href="examples.html#example15">[15]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>anisC1</b> </span>
<p style="margin-left:40px"> Cubic anisotropy direction #1 </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Average( ) Comp( int ) GetRegion( int ) IsUniform( ) Region( int ) SetRegion( int VectorFunction ) SetRegionFn( int func() [3]float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example12">[12]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>anisC2</b> </span>
<p style="margin-left:40px"> Cubic anisotorpy directon #2 </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Average( ) Comp( int ) GetRegion( int ) IsUniform( ) Region( int ) SetRegion( int VectorFunction ) SetRegionFn( int func() [3]float64 )
</span> </p>
<p style="margin-left:40px; color:grey"> examples:
<a href="examples.html#example12">[12]</a>
</p>
</p>
<p><span style="color:#000088; font-size:1.3em"> <b>anisU</b> </span>
<p style="margin-left:40px"> Uniaxial anisotropy direction </p>
<p style="margin-left:40px"> <span style="color:grey"> <b>methods:</b>
Average( ) Comp( int ) GetRegion( int ) IsUniform( ) Region( int ) SetRegion( int VectorFunction ) SetRegionFn( int func() [3]float64 )
</span> </p>