Fig. 3.

Plots of J vs. s, n ^* vs. s and W ^*vs.s. Upper solid line represents the fit of Eq. (4) to the experimental data. The middle solid line represents the fit of Eq. (11). to the data obtained via Eq. (10). The bottom solid line represents the fit of Bk _B T/s ² to the data obtained via Eq. (9)