Abstract (EN):
We have performed a detailed dielectric study of three compounds presenting ferrielectric phases over large temperature intervals. The relaxation processes detected in the SmCF1* phases are highly polidispersive. We have repeatedly observed the surface layer mode described by Bourny er al. [1] and a weak ferrielectric mode, whose relaxation frequency is always higher on heating than on cooling runs. The temperature interval where SmCF1* phases occur is apparently independent of cooling/heating rates and of the history of the sample.
Idioma:
Inglês
Tipo (Avaliação Docente):
Científica
Nº de páginas:
18
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