The stray- and demagnetizing field from a homogeneously magnetized tetrahedron

Kaspar Kirstein Nielsen*, Andrea Roberto Insinga, Rasmus Bjørk

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The stray- and demagnetization field tensor for a homogeneously magnetized tetrahedron is found analytically. The tetrahedron is a special case of four triangular faces with constant magnetization-charge surface density, for which we also determine the tensor field. The tensor field is implemented in the open source micromagnetic and magnetostatic simulation framework MagTense and compared with the obtained magnetic field from an FEM solution, showing excellent agreement. This result is important for modeling magnetostatics in general and for micromagnetism in particular as the demagnetizing field of an arbitrary body discretized using conventional meshing techniques is significantly simplified with this approach.
Original languageEnglish
Article number2110205
JournalI E E E Magnetics Letters
Volume10
Number of pages5
ISSN1949-307X
DOIs
Publication statusPublished - 2019

Keywords

  • Magnetostatics
  • Demagnetization tensor field
  • Tetrahedron
  • Electromagnetism
  • MagTense

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