Dillon, J. F., Jr. Bell Telephone Laboratories, Murray Hill, New Jersey.
Last reviewed:January 2020
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The critical or ordering temperature for a ferromagnetic or a ferrimagnetic material. The Curie temperature (TC) is the temperature below which there is a spontaneous magnetization M in the absence of an externally applied magnetic field, and above which the material is paramagnetic. In the disordered state above the Curie temperature, thermal energy overrides any interactions between the local magnetic moments of ions. Below the Curie temperature, these interactions are predominant and cause the local moments to order or align so that there is a net spontaneous magnetization.
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