Curie–Weiss law
E453915
The Curie–Weiss law is a refinement of Curie’s law in magnetism that accounts for magnetic interactions between atoms by introducing a characteristic temperature, improving the description of paramagnetic susceptibility near ferromagnetic phase transitions.
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
law of magnetism
ⓘ
physical law ⓘ |
| accountsFor | interactions between magnetic moments ⓘ |
| appliesTo |
antiferromagnetic materials above Néel temperature
ⓘ
ferromagnetic materials above Curie temperature ⓘ paramagnetic materials ⓘ |
| approximationType |
mean-field approximation
ⓘ
phenomenological approximation ⓘ |
| associatedWithConcept |
Weiss molecular field
NERFINISHED
ⓘ
mean field theory ⓘ |
| assumes |
linear response to applied magnetic field
ⓘ
non-interacting spins in an effective mean field ⓘ |
| characteristicSignOfTheta |
near-zero θ for simple paramagnets
ⓘ
negative θ for antiferromagnets ⓘ positive θ for ferromagnets ⓘ |
| describes | magnetic susceptibility of paramagnets ⓘ |
| field |
condensed matter physics
ⓘ
magnetism ⓘ statistical mechanics ⓘ |
| givesRelation | χ = C / (T − θ) ⓘ |
| historicalContext | early 20th century development in magnetism theory ⓘ |
| improvesDescriptionNear | ferromagnetic phase transition ⓘ |
| introduces |
Curie temperature
NERFINISHED
ⓘ
Weiss temperature ⓘ |
| limitation | breaks down close to critical temperature due to critical fluctuations ⓘ |
| namedAfter |
Pierre Curie
NERFINISHED
ⓘ
Pierre-Ernest Weiss NERFINISHED ⓘ |
| predicts | divergence of susceptibility at Curie temperature ⓘ |
| refines | Curie’s law NERFINISHED ⓘ |
| relatedModel | Ising model in mean-field approximation NERFINISHED ⓘ |
| relatedTo | Curie law NERFINISHED ⓘ |
| relatesQuantity |
Weiss constant θ
NERFINISHED
ⓘ
absolute temperature T ⓘ magnetic susceptibility χ ⓘ |
| usedFor |
classifying magnetic ordering type
ⓘ
estimating Curie temperature from susceptibility data ⓘ |
| usesParameter | Curie constant ⓘ |
| validInLimit | high temperature limit above ordering temperature ⓘ |
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Curie point