Superconductivity is the total disappearance of electrical resistance below a definite temperature called the transition temperature.
There is a characteristic temperature, called the Kondo temperature, which depends on the impurity and on the metallic host.
Above a temperature called the Néel temperature, thermal motions destroy the antiparallel arrangement, and the material then becomes paramagnetic.
This temperature, called the transition temperature, varies for different materials but generally is below 20 K (−253 °C).
A superconductor loses all electrical resistance when cooled below a characteristic temperature called its critical temperature (Tc).
At a temperature called the Curie temperature, which varies from material to material, the thermally induced disorder overcomes the alignment, and the ferromagnetic properties of the substance disappear.
This spontaneous antiparallel coupling of atomic magnets is disrupted by heating and disappears entirely above a certain temperature, called the Néel temperature, characteristic of each antiferromagnetic material.
Perfect gas, also called ideal gas, a gas that conforms, in physical behaviour, to a particular, idealized relation between pressure, volume, and temperature called the general gas law.
The spontaneous alignment that produces ferrimagnetism is entirely disrupted above a temperature called the Curie point, characteristic of each ferrimagnetic material.
Ferroelectricity ceases in a given material above a characteristic temperature, called its Curie temperature, because the heat agitates the dipoles sufficiently to overcome the forces that spontaneously align them.
