Abstract
A precies experimental study of the paramagnetic resonance line width in CuF 2 2H 2 O was made over a wide temperature range (1.1< T / T N Δ H can be expressed by the following empirical formula: \begin{aligned} \varDelta H-[\varDelta H]_{\infty}{=}A'T/T_{N}-1)^{-n}, \end{aligned} where [ Δ H ] is the line width in the high temperature limit. A and n are the constants determined as follows: 1.1< T / T N <1.3