Explanation

The Neel temperature (TN) of an anti iron materials usually represents the transformation temperature of a materials from amiferromagnetifim to paramagnetism. Below the Neel temperature, the anti iron materials shows amiferromagnetifim, where the magnetic moments are arranged in a specific anti parallel structure in the crystal. When the temperature exceeds the Neel temperature, the thermal movement in the lattice will destroy this antiparallel structure, resulting in the disordered distribution of magnetic moment in the crystal, so that the entire materials presents paramagnetism. Neel temperature is a materials property, similar to the Curie temperature in ferromagnetic materials, which depends on the lattice structure and chemical composition of materials. When the temperature is higher than Neel temperature, the amiferromagnetifim will disappear, and the materials will become a paramagnetic materials, where the magnetic moment will be randomly distributed.

Classification