Introduction to Altermagnetism
Experiments have only recently confirmed the existence of altermagnetism, but it is already making an impact.
By Jennifer Newton, 2025-10-27
The concept of magnonics and altermagnets was unfamiliar to me until I read Rachel Brazil's feature, but they quickly caught my attention.
Understanding Ferromagnetism and Antiferromagnetism
Our knowledge of ferromagnetism dates back thousands of years, with early civilizations observing it in naturally magnetized minerals like lodestone (magnetite).
In ferromagnetic materials, the intrinsic magnetic dipole moments align in parallel, producing a net magnetic field, which makes ferromagnets useful in applications such as data storage devices and loudspeakers.
Meanwhile, antiferromagnetism occurs when neighboring magnetic dipole moments align in opposite directions, cancelling each other out.
No direct quote available in the given text.
Author's summary: Altermagnetism is a newly confirmed type of magnetic material.
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