Curie's law

Since ferrofluids are paramagnetic, they obey Curie's law, thus become less magnetic at higher temperatures.

The material constant in Curie's law is known as the Curie constant.

This fact is encapsulated by Curie's law:

Gadolinium Sulphate continues to satisfy Curie's law at 1K.

When i.e. when is small, the expression of the magnetization can be approximated by the Curie's law:

For low levels of magnetization, the magnetization of paramagnets follows what is known as Curie's law, at least approximately.

Both Curie's Law and the Curie-Weiss law fail as the temperature approaches 0K.

The tetraoxygen molecule (O) was first predicted in 1924 by Gilbert N. Lewis, who proposed it to explain why liquid oxygen defied Curie's law.

Pierre Curie studied ferromagnetism, paramagnetism, and diamagnetism for his doctoral thesis, and discovered the effect of temperature on paramagnetism which is now known as Curie's law.

The constant is used in Curie's Law, which states that for a fixed value of a magnetic field, the magnetization of a material is (approximately) inversely proportional to temperature.

Magnetic susceptibility only occurs above the Curie Temperature and can be calculated from the Curie-Weiss Law which is derived from Curie's Law.

The word paramagnet now merely refers to the linear response of the system to an applied field, the temperature dependence of which requires an amended version of Curie's law, known as the Curie-Weiss law:

Some are paramagnetic down to absolute zero and their susceptibility is inversely proportional to the temperature (see Curie's law); others are magnetically ordered below a critical temperature and the susceptibility increases as it approaches that temperature (see Curie-Weiss law).

Curie's law is valid under the commonly encountered conditions of low magnetization (μH kT), but does not apply in the high-field/low-temperature regime where saturation of magnetization occurs (μH kT) and magnetic dipoles are all aligned with the applied field.