Structural transformations in complex Structural transformations in ...

presssure
Conclusions: High pressure at RT
non‐polar rhombohedral non‐polar monoclinic / triclinic
a − a − a − a − b − b − , no Pb LRO
a − a − a − a + b − b − + anti‐polar Pb LRO
unequal BO 6 tilts around the cubic {100} axes on the local scale
relaxor‐cubic non‐polar rhombohedral state (a − a − a − )
decoupling of off‐centered Pb and B‐cations in PNRs
development of local anti‐polar order of Pb cations
development of quasi‐dynamical a ‐ a ‐ a ‐
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