Figure 5

(a) Zero-field muon asymmetry in BMTO at short times above and below \(T_N=20\) K (symbols). The solid lines are fits with the model (4). (b) The temperature dependence of the internal fields at the two muon stopping sites. The solid lines demonstrate critical scaling of internal fields with critical exponent \(\beta = 0.13\) (see text for details), which is further highlighted on a log–log scale in the inset. The vertical dashed line shows the position of \(T_{N}\).