a new model of correlated disorder in relaxor ferroelectrics
a new model of correlated disorder in relaxor ferroelectrics
a new model of correlated disorder in relaxor ferroelectrics
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Why <strong>relaxor</strong>s and diffuse scatter<strong>in</strong>g?<br />
Relaxors are <strong>in</strong>terest<strong>in</strong>g<br />
PRL 103, 207601<br />
(2009)<br />
Broad frequency-dependent peak <strong>of</strong><br />
susceptibility<br />
No change <strong>of</strong> the average structure<br />
No macroscopic polarization<br />
Relaxors are <strong>disorder</strong>ed<br />
Chemically ordered regions (COR)<br />
Static polar nano-regions (PNR)<br />
Polar glass<br />
S<strong>of</strong>t phonons<br />
Discrete breathers<br />
Disorder is challeng<strong>in</strong>g<br />
“Relaxor <strong>ferroelectrics</strong> were discovered <strong>in</strong> the<br />
1950s but many <strong>of</strong> their properties are not<br />
understood.” AiP 2011
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