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In analogy to ferromagnetic and paramagnetic materials, the term Curie temperature (T C) is also applied to the temperature at which a ferroelectric material transitions to being paraelectric. Hence, T C is the temperature where ferroelectric materials lose their spontaneous polarisation as a first or second order phase change occurs.
This threshold temperature below which a material is ferromagnetic is called the Curie temperature and is different for each material. The Curie–Weiss law describes the changes in a material's magnetic susceptibility, , near its Curie temperature. The magnetic susceptibility is the ratio between the material's magnetization and the applied ...
Spontaneous magnetization is the appearance of an ordered spin state (magnetization) at zero applied magnetic field in a ferromagnetic or ferrimagnetic material below a critical point called the Curie temperature or T C.
Therefore, below the Curie temperature, virtually all of the dipoles in a ferromagnetic material will be aligned. In addition to ferromagnetism, the exchange interaction is also responsible for the other types of spontaneous ordering of atomic magnetic moments occurring in magnetic solids: antiferromagnetism and ferrimagnetism.
When cooled below a temperature called the Curie temperature, the magnetization of a piece of ferromagnetic material spontaneously divides into many small regions called magnetic domains. The magnetization within each domain points in a uniform direction, but the magnetization of different domains may point in different directions.
Typically, materials demonstrate ferroelectricity only below a certain phase transition temperature, called the Curie temperature (T C) and are paraelectric above this temperature: the spontaneous polarization vanishes, and the ferroelectric crystal transforms into the paraelectric state.
The article Ferromagnetic material properties is intended to contain a glossary of terms used to describe ... Curie point (or Curie temperature) A temperature, ...
For many paramagnetic materials, the magnetization of the material is directly proportional to an applied magnetic field, for sufficiently high temperatures and small fields. However, if the material is heated, this proportionality is reduced. For a fixed value of the field, the magnetic susceptibility is inversely proportional to temperature ...