5. Other materials for permanent magnets
5.1 Ductile alloys
The main drawbacks of magnet materials are that they are brittle, hard and breakable. There are a number of alloys whose magnetic properties are those of hard magnetic materials, and which have the advantage of being ductile. They are therefore easily machined, rolled or drawn. However, because their magnetic properties - particularly their coercive field strength - are low, and the cost of the raw materials they are made from is high, they are not widely used, even though...
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Other materials for permanent magnets
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