Journal article
The demagnetizing field of a non-uniform rectangular prism
Fuel Cells and Solid State Chemistry Division. Management, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Manufacturing Engineering, Department of Mechanical Engineering, Technical University of Denmark4
Department of Mechanical Engineering, Technical University of Denmark5
Thermo Ceramics, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark6
The effect of demagnetization on the magnetic properties of a rectangular ferromagnetic prism under non-uniform conditions is investigated. A numerical model for solving the spatially varying internal magnetic field is developed, validated and applied to relevant cases. The demagnetizing field is solved by an analytical calculation and the coupling between applied field, the demagnetization tensor field and spatially varying temperature is solved through iteration.
We show that the demagnetizing field is of great importance in many cases and that it is necessary to take into account the non-uniformity of the internal field, especially for non-constant temperature distributions and composite magnetic materials.
| Language: | English |
|---|---|
| Publisher: | American Institute of Physics |
| Year: | 2010 |
| Pages: | 103910 |
| ISSN: | 10897550 and 00218979 |
| Types: | Journal article |
| DOI: | 10.1063/1.3385387 |
| ORCIDs: | Smith, Anders , Nielsen, Kaspar Kirstein , Christensen, Dennis , Bahl, Christian Robert Haffenden , Bjørk, Rasmus and Hattel, Jesper Henri |
Brændselsceller og brint Demagnetization Fuel cells and hydrogen Magnetic field Magnetic refrigeration Magnetisk køling
