Editing Curie temperature (section)

== Magnetic moments ==

At the atomic level, there are two contributors to the [[magnetic moment]], the [[electron magnetic moment]] and the [[nuclear magnetic moment]].  Of these two terms, the electron magnetic moment dominates, and the nuclear magnetic moment is insignificant.  At higher temperatures, electrons have higher thermal energy.  This has a randomizing effect on aligned magnetic domains, leading to the disruption of order, and the phenomena of the Curie point.<ref name=Hall>{{harvnb|Hall|Hook|1994|p=200}}</ref><ref name=Jullien136>{{harvnb|Jullien|Guinier|1989|pp=136–38}}</ref>

[[ferromagnetism|Ferromagnetic]], [[paramagnetism|paramagnetic]], [[ferrimagnetism|ferrimagnetic]], and [[Antiferromagnetism|antiferromagnetic]] materials have different intrinsic magnetic moment structures. At a material's specific Curie temperature ({{math|''T''<sub>C</sub>}}), these properties change. The transition from antiferromagnetic to paramagnetic (or vice versa) occurs at the [[Curie temperature#Antiferromagnetic and the Néel temperature|Néel temperature]] ({{math|''T''<sub>N</sub>}}), which is analogous to Curie temperature.

{|
|-
! Below {{math|''T''<sub>C</sub>}} !! Above {{math|''T''<sub>C</sub>}}
|-
| Ferromagnetic ||↔ Paramagnetic
|-
| Ferrimagnetic ||↔ Paramagnetic
|-
! Below {{math|''T''<sub>N</sub>}} !! Above {{math|''T''<sub>N</sub>}}
|-
| Antiferromagnetic ||↔ Paramagnetic
|}

<gallery caption="Orientations of magnetic moments in materials" heights="120" mode="packed">
File:Diagram of Ferromagnetic Magnetic Moments.png|'''[[Ferromagnetism]]''': The magnetic moments in a ferromagnetic material are ordered and of the same magnitude in the absence of an applied magnetic field.
File:Diagram of Paramagnetic Magnetic Moments.png|'''[[Paramagnetism]]''': The magnetic moments in a paramagnetic material are disordered in the absence of an applied magnetic field and ordered in the presence of an applied magnetic field.
File:Diagram of Ferrimagnetic Magnetic Moments.png|'''[[Ferrimagnetism]]''': The magnetic moments in a ferrimagnetic material have different magnitudes (due to the crystal containing two different types of magnetic ions{{clarify|date=May 2022}}) which are aligned oppositely in the absence of an applied magnetic field.
File:Diagram of Antiferromagnetic Magnetic Moments.png|'''[[Antiferromagnetism]]''': The magnetic moments in an antiferromagnetic material have the same magnitudes but are aligned oppositely in the absence of an applied magnetic field.
</gallery>