Figure 8
Thermal dependence of the lattice parameters a, b, c, β angle, volume and concentration percent of α-LAS Yb 1.4 mol%. Data collected by single-crystal XRD, between 200 and 298 K, are indicated with empty symbols. Data collected by XRD in polycrystalline samples, between 298 and 548 K, are indicated with full symbols for α-phases and with half-full symbols for β-phases. The vertical dashed line indicates the ferro-paraelectric phase transition. |