What is the relationship between the magnetism of the material and temperature and pressure?
The physical properties of the material with temperature when heated to a certain temperature, the original magnetic will disappear. The magnetic transition point refers to the magnetic material can change between the magnet and the magnet temperature, namely ferroelectric ferroelectric phase transition from paraelectric phase transition temperature to cause.
It can be said that the two phase transition temperature, as the technology improved high temperature permanent magnet can reach 500 degrees around the normal operating environment (such as the FeCrCo FeCrCo permanent magnet high temperature (--50----+500 degrees), the Curie temperature of 680 degrees): magnet pressure under normal atmospheric pressure can meet the use of the environment, but the shape of the product structure at atmospheric pressure under specific may change such as magnet powder at low or high pressure situation due to changes in the properties of shape also will change.
The material has a Curie point, and when the temperature reaches Curie, it loses its magnetism. I don't know what the pressure has to do with it
