Ferrite Magnets (Ceramic Magnets) Explained: Grades, Strength and Uses
Ferrite magnets are the cheapest and most widely made permanent magnets. Here is what they are made of, how strong they are, how the grades work and where they beat neodymium.
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Rare Earth Magnet Recycling: How It Works and Who Is Doing It
Less than 1% of rare earths are recycled today. Here is how magnet recycling works, why it has been so hard, and which plants are now starting up in the US and Europe.
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Neodymium Magnets (NdFeB) Explained: Grades, Strength and Limits
Neodymium magnets are the strongest permanent magnets available. A piece the size of a coin can lift several kilograms, and larger ones drive the motors of electric cars and the generators of wind turbines. Their full name is neodymium iron boron, usually shortened to NdFeB. This guide explains what they are made of, how they…
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Dysprosium: Uses, Supply and the Push for Dy-Free Magnets
Dysprosium (Dy) is the heavy rare earth that keeps EV and wind turbine magnets working when they get hot. Here is what it does, why its supply is so fragile, and how magnet makers are learning to use less of it, or none at all.
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Rare Earth Free Electric Motors: The Complete Guide
Most EV motors rely on neodymium magnets. This guide explains the four proven rare earth free motor designs, which cars already use them, and what they cost in efficiency and size.
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Iron Nitride Magnets (Fe16N2): The Complete Guide
Iron nitride magnets are made from iron and nitrogen and contain no rare earths. Here is how Fe16N2 works, why it is so hard to tame, and how close it is to mass production.
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Which EVs Don’t Use Rare Earth Magnets?
Most electric cars rely on rare earth magnets, but not all. Here is every EV with rare-earth-free drive motors, how those motors work, and whether it matters when you buy.
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Rare Earth Magnet Alternatives: The Complete Guide
Every option for replacing or reducing rare earth magnets, from ferrite and iron nitride to recycling and magnet-free EV motors, with an honest look at what works today.
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Tetrataenite: The Meteorite Magnet Explained
Tetrataenite is a rare-earth-free iron-nickel magnet found in meteorites. Here is why it could rival neodymium magnets, why it is so hard to make, and why a famous 2022 breakthrough was retracted.
