A full-fledged micromagnetic code in fewer than 70 lines of NumPy

We present a complete micromagnetic finite-difference code in fewer than 70 lines of Python. The code makes a large use of the NumPy library and computes the exchange field by finite differences and the demagnetization field with a fast convolution algorithm. Since the magnetization in finite-differ...

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Bibliographic Details
Published inJournal of magnetism and magnetic materials Vol. 387; pp. 13 - 18
Main Authors Abert, Claas, Bruckner, Florian, Vogler, Christoph, Windl, Roman, Thanhoffer, Raphael, Suess, Dieter
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2015
Subjects
Algorithms
Arrays
Demagnetization
Exchange
Finite difference method
Libraries
Magnetization
Mathematical analysis
Micromagnetics
Python
Micromagnetics
Finite-difference method
Python
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ISSN0304-8853
DOI10.1016/j.jmmm.2015.03.081

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Summary:We present a complete micromagnetic finite-difference code in fewer than 70 lines of Python. The code makes a large use of the NumPy library and computes the exchange field by finite differences and the demagnetization field with a fast convolution algorithm. Since the magnetization in finite-difference micromagnetics is represented by a multi-dimensional array and the NumPy library features a rich interface for this data structure, the code we present is an ideal starting point for the development of novel algorithms. •A very concise but complete micromagnetic code written in Python is presented.•An introduction to finite-difference micromagnetics is provided.•The code is a perfect starting point for the development of novel algorithms.
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ISSN:0304-8853
DOI:10.1016/j.jmmm.2015.03.081