Evolution of the neutron quasi-elastic scattering through the ferroelectric phase transition in 93%\pzn - 7% PbTiO$_3$

Details Evolution of the neutron quasi-elastic scattering through the ferroelectric phase transition in 93%\pzn - 7% PbTiO$_3$ Evolution of the neutron quasi-elastic scattering through the ferroelectric phase transition in 93%\pzn - 7% PbTiO$_3$

2008-05-19

arxiv.org/abs/0805.2908v1

Physics

Condensed Matter

Materials Science

Scientific paper

10.1063/1.2963474

We show that the neutron diffuse scattering in relaxor ferroelectric (1-x)PbZn$_{1/3}$Nb$_{2/3}$O$_{3}$ - x PbTiO$_{3}$ (x=0.07) consists of two components. The first component is strictly elastic but extended in q-space and grows below 600 K. The second component, that was not reported before for the (1-x)PbZn$_{1/3}$Nb$_{2/3}$O$_{3}$ - x PbTiO$_{3}$ (x=0.07) relaxor ferroelectrics, is quasi-elastic with a line-width that has a similar temperature dependence as the width of the central peak observed by Brillouin spectroscopy. The temperature dependence of the susceptibility of the quasi-elastic scattering has a maximum at the ferroelectric transition.

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