Question

loos of magnetic power of magnet is called
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Answer 1

As the temperature increases, at a certain point called the Curie temperature, a magnet will lose its strength completely. ... Nickel has a Curie temperature of 358 Celsius (676 Fahrenheit); iron's is 770 C (1418 F). Once the metal cools, its ability to attractmagnets returns, though its permanentmagnetism becomes weak.

Answer 2

Answer:

Coercivity. Coercivity (or the coercive field) is the property of a material to resist demagnetization due to the intensity of the material's magnetic field. Coercivity is measured by the extent to which a demagnetizing field must be applied to reduce the material's magnetism to zero.