Brillouin function


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Brillouin function

[brēy·wan ¦fəŋk·shən]
(solid-state physics)
A function of x with index (or parameter) n that appears in the quantum-mechanical theories of paramagnetism and ferromagnetism and is expressed as [(2 n + 1)/2 n ] coth [(2 n + 1) x /2 n ] - (1/2 n) coth (x /2 n).