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magnetic pigment
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magnetic pigment

chemistry
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Quick Summary

Magnetic pigments are specialized materials that provide a magnetic moment to coatings, in addition to color and opacity. These pigments are used in applications like magnetic audio and video tapes for information storage.12

A key example of a material with magnetic properties is magnetite (Fe₃O₄), a ferrimagnetic mineral. In ferrimagnetic materials, magnetic moments align in an antiparallel fashion but do not completely cancel out, resulting in a net magnetic moment. Ferrites, which are iron oxides, are also ferrimagnetic and are electrically insulating, making them useful in magnetic cores. Their high resistivity reduces heat loss from eddy currents and allows them to absorb electromagnetic radiation, a property utilized in stealth technology.3

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
3 Britannica Sources
  1. crystal - Ferrimagnetic materials
  2. surface coating - Specialty , functional , and other pigments
  3. surface coating - Colour pigments

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