macrospin Python package

The macrospin package simulates isolated macrospins in a simple and efficient way. The Landau-Lifshitz equation is solved by either a C++ kernel or a CUDA kernel. Both are accessible directly from Python to allow easy simulations in and out of the IPython Notebook.

Basic example of macrospin in applied field

from macrospin.parameters import CgsParameters
from macrospin.kernels import BasicKernel

parameters = CgsParameters({
    'Ms': 140, # Saturation Magnetization (emu/cc)
    'dt': 5e-13, # Timestep (sec)
    'damping': 0.01, # Gilbert damping
    'Hext': [0., 1e3, 0.], # External field (Oe)
    'm0': [-0.999, 0.001, 0.001], # Initial moment (normalized)
    'Nd': [0, 0, 0], # Demagnetization diagonal tensor elements
})

kernel = BasicKernel(parameters)

# times: Numpy array of simulation times
# moments: Numpy array of moment orientations
times, moments = kernel.run(time=1e-7)