Metamaterial anisotropic flux concentrators and magnetic arrays

Research output: Contribution to journalJournal articleResearchpeer-review

283 Downloads (Pure)

Abstract

A metamaterial magnetic flux concentrator is investigated in detail in combination with a Halbach cylinder of infinite length. A general analytical solution to the field is determined and the magnetic figure of merit is determined for a Halbach cylinder with a flux concentrator. It is shown that an ideal flux concentrator will not change the figure of merit of a given magnet design, while the non-ideal will always lower it. The geometric parameters producing maximum figure of merit, i.e., the most efficient devices, are determined. The force and torque between two concentric Halbach cylinders with flux concentrators is determined and the maximum torque is found. Finally, the effect of non-ideal flux concentrators and the practical use of flux concentrators, as well as demagnetization issues, is discussed. © 2013 AIP Publishing LLC.
Original languageEnglish
Article number053912
JournalJournal of Applied Physics
Volume114
Issue number5
ISSN0021-8979
DOIs
Publication statusPublished - 2013

Bibliographical note

Copyright (2013) 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. The following article appeared in J. Appl. Phys. 114, 053912 (2013) and may be found at http://jap.aip.org/resource/1/JAPIAU/v114/i5.

Keywords

  • Cylinders (shapes)
  • Metamaterials
  • Solar concentrators

Cite this

@article{50454d1c415d44d1a9eca3f8665a857f,
title = "Metamaterial anisotropic flux concentrators and magnetic arrays",
abstract = "A metamaterial magnetic flux concentrator is investigated in detail in combination with a Halbach cylinder of infinite length. A general analytical solution to the field is determined and the magnetic figure of merit is determined for a Halbach cylinder with a flux concentrator. It is shown that an ideal flux concentrator will not change the figure of merit of a given magnet design, while the non-ideal will always lower it. The geometric parameters producing maximum figure of merit, i.e., the most efficient devices, are determined. The force and torque between two concentric Halbach cylinders with flux concentrators is determined and the maximum torque is found. Finally, the effect of non-ideal flux concentrators and the practical use of flux concentrators, as well as demagnetization issues, is discussed. {\circledC} 2013 AIP Publishing LLC.",
keywords = "Cylinders (shapes), Metamaterials, Solar concentrators",
author = "Rasmus Bj{\o}rk and Anders Smith and Bahl, {Christian R.H.}",
note = "Copyright (2013) 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. The following article appeared in J. Appl. Phys. 114, 053912 (2013) and may be found at http://jap.aip.org/resource/1/JAPIAU/v114/i5.",
year = "2013",
doi = "10.1063/1.4816096",
language = "English",
volume = "114",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "5",

}

Metamaterial anisotropic flux concentrators and magnetic arrays. / Bjørk, Rasmus; Smith, Anders; Bahl, Christian R.H.

In: Journal of Applied Physics, Vol. 114, No. 5, 053912, 2013.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Metamaterial anisotropic flux concentrators and magnetic arrays

AU - Bjørk, Rasmus

AU - Smith, Anders

AU - Bahl, Christian R.H.

N1 - Copyright (2013) 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. The following article appeared in J. Appl. Phys. 114, 053912 (2013) and may be found at http://jap.aip.org/resource/1/JAPIAU/v114/i5.

PY - 2013

Y1 - 2013

N2 - A metamaterial magnetic flux concentrator is investigated in detail in combination with a Halbach cylinder of infinite length. A general analytical solution to the field is determined and the magnetic figure of merit is determined for a Halbach cylinder with a flux concentrator. It is shown that an ideal flux concentrator will not change the figure of merit of a given magnet design, while the non-ideal will always lower it. The geometric parameters producing maximum figure of merit, i.e., the most efficient devices, are determined. The force and torque between two concentric Halbach cylinders with flux concentrators is determined and the maximum torque is found. Finally, the effect of non-ideal flux concentrators and the practical use of flux concentrators, as well as demagnetization issues, is discussed. © 2013 AIP Publishing LLC.

AB - A metamaterial magnetic flux concentrator is investigated in detail in combination with a Halbach cylinder of infinite length. A general analytical solution to the field is determined and the magnetic figure of merit is determined for a Halbach cylinder with a flux concentrator. It is shown that an ideal flux concentrator will not change the figure of merit of a given magnet design, while the non-ideal will always lower it. The geometric parameters producing maximum figure of merit, i.e., the most efficient devices, are determined. The force and torque between two concentric Halbach cylinders with flux concentrators is determined and the maximum torque is found. Finally, the effect of non-ideal flux concentrators and the practical use of flux concentrators, as well as demagnetization issues, is discussed. © 2013 AIP Publishing LLC.

KW - Cylinders (shapes)

KW - Metamaterials

KW - Solar concentrators

U2 - 10.1063/1.4816096

DO - 10.1063/1.4816096

M3 - Journal article

VL - 114

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 5

M1 - 053912

ER -