The PUC consists in computing the equilibrium of the magnetization in a periodical cube in the X,Y directions composed by 8 grains.
The size of the cube is 100 microns.
The mesh constains 64 cells in all directions. The distribution of the grains within the cube is described in the PUC geometry file
The matter parameters are as follow:
| Ms | Aimantations (A/m) | 0.17e7 |
| K | Anisotropy (J/m^3) | 4.8e4 |
| A | Exchange (J/m^3) | 2.10e-8 |
| L | reference length (m) | 1.5625e-6 |
The uniaxial anisotropy direction U1 is uniformly in the X-direction.
For each grain, the direction of anisotropy is transformed by spheric rotation defined with 3 angles thanks to the PUC grains file
The initial magnetism M is uniformly in the X direction.
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| anisotropy directions K1 along x over the domain. |
2 simulations are launched :
- one with the basic computation on dyoptic grids considering only 4 levels
- oen with computation by 8 zones on dyoptic grids considering only 4 levels
The basic dyoptic grids computation converges in 884 iterations and stops because of the variation of energy is less than 1.e-8.
The value of of magnetism at equilibrium basic dyoptic grids are plot as follow:
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| equilibrium magnetism x-value | equilibrium magnetism y-value | equilibrium magnetism z-value |
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| total magnetic excitation H | norm of total magnetic excitation H | equilibrium magnetism M colored by |H| |
The value of of magnetism at equilibrium basic dyoptic grids are plot as follow:
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| equilibrium magnetism x-value | equilibrium magnetism y-value | equilibrium magnetism z-value |
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| total magnetic excitation H | norm of total magnetic excitation H | equilibrium magnetism M colored by |H| |
The variation of energies during the first iterations are as follow:
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| All energies for basic dyoptic grids | all energies for zonal dyoptic grids |
