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Depending on the type of magnet, some lose their attraction when baked at the temperature we need to bake clay.
http://en.wikipedia.org/wiki/Magnet
If we heat a magnetic material above its "Curie Temperature," its magnetism vanishes entirely. When the magnet cools down again, all the microscopic magnetic domains will point in circles, so the magnet will have zero overall field. Neodymium magnets have a low Curie Temp., so they are more sensitive to overheating than other types of magnet. |
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