scholarly journals Bandgap behavior and singularity of the domain-induced light scattering through the pressure-induced ferroelectric transition in relaxor ferroelectric AxBa1–xNb2O6 (A: Sr,Ca)

2018 ◽  
Vol 112 (4) ◽  
pp. 042901 ◽  
Author(s):  
J. Ruiz-Fuertes ◽  
O. Gomis ◽  
A. Segura ◽  
M. Bettinelli ◽  
M. Burianek ◽  
...  
Keyword(s):  
Light Scattering ◽  
Relaxor Ferroelectric ◽  
Ferroelectric Transition

Local atomic structure of relaxor ferroelectric solids studied by pulsed neutron scattering

1994 ◽  
Vol 52 ◽  
pp. 554-555
Author(s):  
T. Egami ◽  
H. D. Rosenfeld ◽  
S. Teslic
Keyword(s):  
Neutron Scattering ◽  
Atomic Structure ◽  
Argonne National Laboratory ◽  
Relaxor Ferroelectrics ◽  
Relaxor Ferroelectric ◽  
Crystallographic Structure ◽  
Chemical Inhomogeneity ◽  
Distribution Analysis ◽  
Ferroelectric Transition ◽  
Pulsed Neutron

Relaxor ferroelectrics, such as Pb(Mg1/3Nb2/3)O3 (PMN) or (Pb·88La ·12)(Zr·65Ti·35)O3 (PLZT), show diffuse ferroelectric transition which depends upon frequency of the a.c. field. In spite of their wide use in various applications details of their atomic structure and the mechanism of relaxor ferroelectric transition are not sufficiently understood. While their crystallographic structure is cubic perovskite, ABO3, their thermal factors (apparent amplitude of thermal vibration) is quite large, suggesting local displacive disorder due to heterovalent ion mixing. Electron microscopy suggests nano-scale structural as well as chemical inhomogeneity.We have studied the atomic structure of these solids by pulsed neutron scattering using the atomic pair-distribution analysis. The measurements were made at the Intense Pulsed Neutron Source (IPNS) of Argonne National Laboratory. Pulsed neutrons are produced by a pulsed proton beam accelerated to 750 MeV hitting a uranium target at a rate of 30 Hz. Even after moderation by a liquid methane moderator high flux of epithermal neutrons with energies ranging up to few eV’s remain.

Dynamic Light Scattering at Domains and Nanoclusters in a Relaxor Ferroelectric

2001 ◽  
Vol 86 (26) ◽  
pp. 6014-6017 ◽  
Author(s):  
W. Kleemann ◽  
P. Licinio ◽  
Th. Woike ◽  
R. Pankrath
Keyword(s):  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Relaxor Ferroelectric

The spontaneous relaxor‐ferroelectric transition of Pb(Sc0.5Ta0.5)O3

1993 ◽  
Vol 74 (8) ◽  
pp. 5129-5134 ◽  
Author(s):  
F. Chu ◽  
N. Setter ◽  
A. K. Tagantsev
Keyword(s):  
Relaxor Ferroelectric ◽  
Ferroelectric Transition

scholarly journals Broadband inelastic light scattering of a relaxor ferroelectric 0.71Pb(Ni1∕3Nb2∕3)O3-0.29PbTiO3

2006 ◽  
Vol 89 (21) ◽  
pp. 212903 ◽  
Author(s):  
Shinya Tsukada ◽  
Yuji Ike ◽  
Jun Kano ◽  
Tadashi Sekiya ◽  
Yoshihito Shimojo ◽  
...  
Keyword(s):  
Light Scattering ◽  
Relaxor Ferroelectric ◽  
Inelastic Light Scattering
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