Evolution of the neutron quasi-elastic scattering through the ferroelectric phase transition in 93%PbZn${}_{1/3}$Nb${}_{2/3}$O${}_3$ - 7% PbTiO${}_3$

Abstract

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.

References in corpus (6)

• Direct observation of the formation of polar nanoregions in Pb(Mg${}_{1/3}$Nb${}_{2/3}$)O${}_3$ using neutron pair distribution function analysis
• Universal Static and Dynamic Properties of the Structural Transition in Pb(Zn1/3Nb2/3)O3
• Cold neutron scattering study on diffuse and phonon excitations in the relaxor PbMg(1/3)Nb(2/3)O3
• Quasi-Elastic Scattering, Random Fields and phonon-coupling effects in PbMg1/3Nb2/3O3
• Disorder and relaxation mode in the lattice dynamics of PbMg${}_{1/3}$Nb${}_{2/3}$O${}_3$ relaxor ferroelectric
• The Structural Phase Transition of the Relaxor Ferroelectric 68%PbMg1/3Nb2/3O3-32%PbTiO3

Cited by in corpus (5)

• Random Electric Field Instabilities of Relaxor Ferroelectrics
• Paraelectric and Ferroelectric States in a Model for Relaxor Ferroelectrics
• A two-component model of the neutron diffuse scattering in the relaxor ferroelectric PZN-4.5%PT
• Relaxation of dynamically disordered tetragonal platelets in the relaxor ferroelectric $0.964{\mathrm{Na}}_{1/2}{\mathrm{Bi}}_{1/2}{\mathrm{TiO}}_3-0.036{\mathrm{BaTiO}}_3$
• Soft Modes and Relaxor Ferroelectrics