Infrared and Raman spectroscopy of [Pb(Zn1/3Nb2/3)O3]0.92-[PbTiO3 ]0.08 and [Pb(Mg1/3Nb2/3)O3]0.71-[PbTiO3 ]0.29 single crystals

被引：0

作者：

机构：

[1] Kamba, S.

[2] Buixaderas, E.

[3] Petzelt, J.

[4] Fousek, J.

[5] Nosek, J.

[6] Bridenbaugh, P.

来源：

Kamba, S. (kamba@fzu.cz) | 1600年 / American Institute of Physics Inc.卷 / 93期

关键词：

Damping - Dispersions - Infrared spectroscopy - Neutron scattering - Phase transitions - Phonons - Vectors;

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摘要：

The lattice dynamics of all three crystal phases of [Pb(Zn1/3Nb2/3)O3]1-x-PbTiO 3]x PMN - 2 9 % PT and PZN-8% single crystals was studied. The dominant local ordering in the perovskite B sites and doubled primitive unit cell was confirmed at all studied temperatures. The absence of phonon softening was compatible with the relaxor nature of the ferroelectricity in both compounds. The ferroelectric transitions consisted only in a stepwise increase in nanocluster size which changed into the domain structure.

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