scholarly journals Broadband gigahertz dynamics of relaxor ferroelectric Pb(Sc1/2Nb1/2)O3-xPbTiO3 single crystal probed by Brillouin scattering

2011 ◽  
Vol 109 (8) ◽  
pp. 084114 ◽  
Author(s):  
S. Kojima ◽  
S. Tsukada ◽  
Y. Hidaka ◽  
A. A. Bokov ◽  
Z.-G. Ye
Keyword(s):  
Single Crystal ◽  
Brillouin Scattering ◽  
Relaxor Ferroelectric

High-pressure Brillouin scattering of the single-crystal PbSc_{1/2}Ta_{1/2}O_{3} relaxor ferroelectric

2013 ◽  
Vol 87 (18) ◽  
Author(s):  
H. Marquardt ◽  
N. Waeselmann ◽  
M. Wehber ◽  
R. J. Angel ◽  
M. Gospodinov ◽  
...  
Keyword(s):  
High Pressure ◽  
Single Crystal ◽  
Brillouin Scattering ◽  
Relaxor Ferroelectric

Single-crystal elasticity of the rhodochrosite at high pressure by Brillouin scattering spectroscopy

2018 ◽  
Vol 38 (4) ◽  
pp. 396-405 ◽  
Author(s):  
Chaoshuai Zhao ◽  
Heping Li ◽  
Pofei Chen ◽  
Jianjun Jiang ◽  
Wen Liang
Keyword(s):  
High Pressure ◽  
Single Crystal ◽  
Brillouin Scattering

Photoinduced Metallic Particle Growth on Single-Crystal Relaxor Ferroelectric Strontium Barium Niobate

2018 ◽  
Vol 122 (10) ◽  
pp. 5590-5598 ◽  
Author(s):  
Eftihia Barnes ◽  
Erik M. Alberts ◽  
L. Christopher Mimun ◽  
Jonathon A. Brame ◽  
Christopher M. Warner ◽  
...  
Keyword(s):  
Single Crystal ◽  
Particle Growth ◽  
Relaxor Ferroelectric ◽  
Metallic Particle ◽  
Strontium Barium Niobate ◽  
Strontium Barium

scholarly journals Diffuse scattering from the lead-based relaxor ferroelectric PbMg1/3Ta2/3O3

2011 ◽  
Vol 44 (3) ◽  
pp. 603-609 ◽  
Author(s):  
Antonio Cervellino ◽  
S. N. Gvasaliya ◽  
O. Zaharko ◽  
B. Roessli ◽  
G. M. Rotaru ◽  
...  
Keyword(s):  
Single Crystal ◽  
Atomic Structure ◽  
Diffuse Scattering ◽  
Relaxor Ferroelectric ◽  
The Other ◽  
X Ray Diffraction ◽  
Correlation Lengths ◽  
X Ray ◽  
Displacement Vectors ◽  
Polar Nanoregions

The relaxor ferroelectric PbMg1/3Ta2/3O3was studied by single-crystal neutron and synchrotron X-ray diffraction, and its detailed atomic structure modelled in terms of static Pb displacements that lead to the formation of polar nanoregions. Similar to the other members of the Pb-based relaxor family like PbMg1/3Nb2/3O3or PbZn1/3Nb2/3O3the diffuse scattering in the [H00]/[0K0] scattering plane has a butterfly shape around theh00 Bragg reflections and is orthogonal to the scattering vector forhh0 peaks. In the [HH0]/[00L] plane the diffuse scattering is elongated along the 〈112〉 directions and is orthogonal to the scattering vector forhhhreflections. It is found that a model consisting of correlated Pb displacements along the 〈111〉 directions reproduces adequately the main features of the diffuse scattering in PbMg1/3Ta2/3O3when the correlation lengths between the Pb-ion displacement vectors are longest along the 〈111〉 and shortest along the 〈11{\overline 2}〉 and 〈1{\overline 1}0〉 directions.

Hypersonic and Dielectric Studies of Relaxor Ferroelectric Single Crystal

1999 ◽  
Vol 604 ◽  
Author(s):  
Chi-Shun Tu ◽  
V.H. Schmiidt ◽  
C.-H. Yeh ◽  
L.-F. Chen ◽  
C.-L. Tsai
Keyword(s):  
Phase Transition ◽  
Dielectric Permittivity ◽  
Single Crystal ◽  
Thermal Hysteresis ◽  
Relaxor Ferroelectric ◽  
Dipolar Relaxation ◽  
First Order ◽  
Dielectric Data ◽  
Scattering Spectra ◽  
Ferroelectric Single Crystal

AbstractBoth the longitudinal (LA) Brillouin back-scattering spectra and dielectric permittivity along the [001] direction have been measured as a function of temperature for a relaxor ferroelectric single crystal (PbMg1/3Nb2/3O3)0.68(PbTiO3)0.32 (PMN-32%PT). A sharp ferroelectric phase transition (which is associated with a Landau-Khalatnikov-like phonon damping maximum) was observed near 445 K. As temperature increases, a diffuse phase transition was detected near 280 K. In addition, the nature of the thermal hysteresis for the dielectric permittivity confirms that these transitions (near 280 and 445 K for heating procedure) are diffuse first-order and first-order, It respectively. The dielectric data prove the existence of an electric dipolar relaxation process below 300 K.

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