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Related Concept Videos

Ferromagnetism01:31

Ferromagnetism

2.4K
Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
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Magnetic Susceptibility and Permeability01:31

Magnetic Susceptibility and Permeability

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In linear magnetic materials, like paramagnets and diamagnets, magnetization is proportional to the magnetic field intensity. The constant of proportionality, a dimensionless number, is called magnetic susceptibility. The value of the susceptibility depends on the type of material.
When diamagnetic materials are placed under an external magnetic field, the moments opposite to the field are induced. Hence, the susceptibility for diamagnets has a minimal negative value of 10-5–10-6. Since...
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On thermal characterization method of integrated magnetic components.

Bechir Mahamat Basma1,2, David Piétroy3, Mahamat Issa Boukhari3

  • 1Université Jean Monnet Saint-Etienne, CNRS, Institut d'Optique Graduate School, Laboratoire Hubert Curien UMR 5516, F-42023, Saint-Etienne, France. basma.basma.bechir.mahamat@univ-st-etienne.fr.

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|February 28, 2024
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Summary

This study presents a new method to measure the operating temperature of magnetic components. The technique uses two sensors to accurately characterize temperature effects on magnetic properties.

Keywords:
Fiber Bragg gratingsInductorsResistive sensorThermal analysisThermal control

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Electromagnetics

Background:

  • Operating temperature is critical for integrated magnetic components.
  • High temperatures alter magnetic material properties like saturation magnetization and magnetic permeability.

Purpose of the Study:

  • To introduce and validate an experimental characterization method for magnetic component operating temperatures.
  • To compare the performance of two different sensors for temperature measurement.

Main Methods:

  • Experimental characterization using two distinct temperature sensors.
  • Validation on a meander component.
  • Application to planar spiral inductors (with and without magnetic material).

Main Results:

  • The proposed method successfully characterizes operating temperatures.
  • Sensor comparison provides insights into measurement accuracy.
  • Temperature effects on magnetic components are experimentally demonstrated.

Conclusions:

  • The developed method is effective for assessing the thermal behavior of integrated magnetic components.
  • Accurate temperature characterization is essential for reliable magnetic component design and performance.