Néel temperature

The Néel temperature or magnetic ordering temperature, TN, is the temperature above which an antiferromagnetic material becomes paramagnetic—that is, the thermal energy becomes large enough to destroy the macroscopic magnetic ordering within the material.

The Néel temperature is analogous to the Curie temperature, TC, for ferromagnetic materials. It is named after Louis Néel (1904–2000), who received the 1970 Nobel prize in physics for his work in the area.

Listed below are the Néel temperatures of several materials:[1]

substance Néel temperature, in Kelvin
MnO 116
MnS 160
MnTe 307
MnF2 67
FeF2 79
FeCl2 24
FeI2 9
FeO 198
FeOCl 80
CoCl2 25
CoI2 12
CoO 291
NiCl2 50
NiI2 75
NiO 525
Cr 308
Cr2O3 307
Nd5Ge3 50

References

  1. ↑ Kittel, Charles (2005). Introduction to Solid State Physics (8th ed.). New York: John Wiley & Sons. ISBN 978-0-471-41526-8.
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