The demagnetizing field of a non-uniform rectangular prism

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Abstract

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.
Original languageEnglish
JournalJournal of Applied Physics
Volume107
Issue number10
Pages (from-to)103910
ISSN0021-8979
DOIs
Publication statusPublished - 2010

Bibliographical note

Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Keywords

  • Magnetic refrigeration
  • Magnetic field
  • Fuel cells and hydrogen
  • Demagnetization

Cite this

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title = "The demagnetizing field of a non-uniform rectangular prism",
abstract = "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.",
keywords = "Magnetic refrigeration, Magnetic field, Fuel cells and hydrogen, Demagnetization, Magnetisk k{\o}ling, Br{\ae}ndselsceller og brint",
author = "Anders Smith and Nielsen, {Kaspar Kirstein} and Dennis Christensen and Bahl, {Christian Robert Haffenden} and Rasmus Bj{\o}rk and Hattel, {Jesper Henri}",
note = "Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.",
year = "2010",
doi = "10.1063/1.3385387",
language = "English",
volume = "107",
pages = "103910",
journal = "Journal of Applied Physics",
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publisher = "American Institute of Physics",
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The demagnetizing field of a non-uniform rectangular prism. / Smith, Anders; Nielsen, Kaspar Kirstein; Christensen, Dennis; Bahl, Christian Robert Haffenden; Bjørk, Rasmus; Hattel, Jesper Henri.

In: Journal of Applied Physics, Vol. 107, No. 10, 2010, p. 103910.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - The demagnetizing field of a non-uniform rectangular prism

AU - Smith, Anders

AU - Nielsen, Kaspar Kirstein

AU - Christensen, Dennis

AU - Bahl, Christian Robert Haffenden

AU - Bjørk, Rasmus

AU - Hattel, Jesper Henri

N1 - Copyright (2010) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

KW - Magnetic refrigeration

KW - Magnetic field

KW - Fuel cells and hydrogen

KW - Demagnetization

KW - Magnetisk køling

KW - Brændselsceller og brint

U2 - 10.1063/1.3385387

DO - 10.1063/1.3385387

M3 - Journal article

VL - 107

SP - 103910

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 10

ER -