Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes

Dan Eriksen, Christian R.H. Bahl, Anders Smith, Nini Pryds

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous temperature dependent and temperature adjustable actuation systems. A shunt valve utilizing such a system was designed, built and tested.
Original languageEnglish
JournalI E E E Transactions on Magnetics
Volume49
Issue number3
Pages (from-to)1159-1162
ISSN0018-9464
DOIs
Publication statusPublished - 2013

Keywords

  • Magnetic forces
  • Magnetic materials
  • Permanent magnet (PM) machines

Cite this

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title = "Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes",
abstract = "The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous temperature dependent and temperature adjustable actuation systems. A shunt valve utilizing such a system was designed, built and tested.",
keywords = "Magnetic forces, Magnetic materials, Permanent magnet (PM) machines",
author = "Dan Eriksen and Bahl, {Christian R.H.} and Anders Smith and Nini Pryds",
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Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes. / Eriksen, Dan; Bahl, Christian R.H.; Smith, Anders; Pryds, Nini.

In: I E E E Transactions on Magnetics, Vol. 49, No. 3, 2013, p. 1159-1162.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Utilizing Materials With Controllable Curie Temperatures for Magnetic Actuation Purposes

AU - Eriksen, Dan

AU - Bahl, Christian R.H.

AU - Smith, Anders

AU - Pryds, Nini

PY - 2013

Y1 - 2013

N2 - The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous temperature dependent and temperature adjustable actuation systems. A shunt valve utilizing such a system was designed, built and tested.

AB - The magnetic force between a permanent magnet and different blocks of ferromagnetic materials was measured and calculated as a function of distance and temperature in the vicinity of the Curie temperature of the materials. The calculations were carried out using a 3-D finite-element model of the system. On the basis of forces predicted by the model a number of equilibrium points were calculated for a system where the magnetic force on a ferromagnetic block of material is balanced by a linear spring force. It is shown how these calculation procedures can be used as a tool for designing autonomous temperature dependent and temperature adjustable actuation systems. A shunt valve utilizing such a system was designed, built and tested.

KW - Magnetic forces

KW - Magnetic materials

KW - Permanent magnet (PM) machines

U2 - 10.1109/TMAG.2012.2226907

DO - 10.1109/TMAG.2012.2226907

M3 - Journal article

VL - 49

SP - 1159

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JO - I E E E Transactions on Magnetics

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