Mihailova
Mihailova
Mihailova
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PST and PBST at HP<br />
Raman scattering, X-ray X ray diffraction and diffuse scattering<br />
AP - 9 GPa : • enhancement of the anisotropy in the Pb-O system<br />
• suppression of B-cation off-centre shifts<br />
PbSc 0.5Ta 0.5Ta0.5<br />
0.5 O3 new! new!<br />
Pb 0.78Ba 0.78Ba0.22Sc<br />
0.22Sc0.5Ta<br />
0.5Ta0.5<br />
0.5 O3 a sequence of local structural changes between 1.2 - 3.5 GPa<br />
reversible phase transition near 2.0 GPa<br />
(submitted for publication)<br />
new canonical relaxor! relaxor<br />
two types of Pb-O bonds revealed by pressure<br />
stiff octahedral distortions near the incorporated Ba cations<br />
responsible for the suppression of long-range FE ordering<br />
(to be submitted for publication)
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