MLA Citation: Bloomfield, Louis A. "Question 276"
276. Magnets can be demagnetized by heat. Is that true for permanent magnets or materials that have been magnetized?
It's true for both because permanent magnets are just a special material that has been magnetized. In fact, permanent magnets are often demagnetized more easily than other simpler materials. Anything that spoils the internal order of a material (heat or vibration) can demagnetize it.

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