GEOLOGY

Detailed explanation-1: -Heating a magnet above the Curie temperature causes the magnetic domains to be disrupted permanently. Mild heating causes a reduction in the magnetism. However, when it cools the full magnetism is restored. Thus, a magnet can lose its properties if it is heated, hammered or if it is dropped from a height.

Detailed explanation-2: -A magnet subjected to heat experiences a reduction in its magnetic field as the particles within the magnet are moving at an increasingly faster and more sporadic rate. This jumbling confuses and misaligns the magnetic domains, causing the magnetism to decrease.

Detailed explanation-3: -When heated above 176° Fahrenheit (80° Celsius), magnets will quickly lose their magnetic properties. The magnet will become permanently demagnetized if exposed to these temperatures for a certain length of time or heated at a significantly higher temperature (Curie temperature).

Detailed explanation-4: -Magnets lose their properties if they are heated, hammered or dropped from some height.

Detailed explanation-5: -So to destroy a magnet, you just need to heat it up past its magnetic melting point, called the Curie temperature. It probably won’t look like much is happening, but once the atoms are jiggling around enough, their magnetic fields will no longer all point in the same direction. Magnet destroyed.