Position and electric field dependent local lattice strain detected by nanobeam x-ray diffraction on a relaxor ferroelectric single crystal

2022 ◽  
Vol 105 (2) ◽  
Author(s):  
Shinobu Aoyagi ◽  
Ayumi Aoyagi ◽  
Hiroaki Takeda ◽  
Hitoshi Osawa ◽  
Kazushi Sumitani ◽  
...  
Keyword(s):  
Electric Field ◽  
Single Crystal ◽  
Lattice Strain ◽  
Relaxor Ferroelectric ◽  
X Ray Diffraction ◽  
X Ray ◽  
Field Dependent ◽  
Local Lattice ◽  
Ferroelectric Single Crystal

scholarly journals Time-Resolved Nanobeam X-ray Diffraction of a Relaxor Ferroelectric Single Crystal under an Alternating Electric Field

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1419
Author(s):  
Shinobu Aoyagi ◽  
Ayumi Aoyagi ◽  
Hiroaki Takeda ◽  
Hitoshi Osawa ◽  
Kazushi Sumitani ◽  
...  
Keyword(s):  
Electric Field ◽  
Single Crystal ◽  
Lattice Strain ◽  
Relaxor Ferroelectric ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Alternating Electric Field ◽  
Local Lattice ◽  
Ferroelectric Single Crystal

Lead-containing relaxor ferroelectrics show enormous piezoelectric capabilities relating to their heterogeneous structures. Time-resolved nanobeam X-ray diffraction reveals the time and position dependences of the local lattice strain on a relaxor ferroelectric single crystal mechanically vibrating and alternately switching, as well as its polarization under an alternating electric field. The complicated time and position dependences of the Bragg intensity distributions under an alternating electric field demonstrate that nanodomains with the various lattice constants and orientations exhibiting different electric field responses exist in the measured local area, as the translation symmetry breaks to the microscale. The dynamic motion of nanodomains in the heterogeneous structure, with widely distributed local lattice strain, enables enormous piezoelectric lattice strain and fatigue-free ferroelectric polarization switching.

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.

The piezoelectric tensor element d 33 of KTiOPO4 determined by single crystal X-ray diffraction

1997 ◽  
Vol 53 (3) ◽  
pp. 565-567 ◽  
Author(s):  
H. Graafsma ◽  
G. W. J. C. Heunen ◽  
S. Dahaoui ◽  
A. El Haouzi ◽  
N. K. Hansen ◽  
...  
Keyword(s):  
High Resolution ◽  
Electric Field ◽  
Single Crystal ◽  
Insulator Transition ◽  
Piezoelectric Constant ◽  
X Ray Diffraction ◽  
X Ray ◽  
Temperature Range ◽  
Tensor Element ◽  
Different Sources

The d 33 piezoelectric constant of KTiOPO4 (potassium titanium orthophosphate, KTP) has been determined for two different samples and at temperatures between 100 and 220 K, using high-resolution X-ray diffraction of a single-crystal in an electric field. The observed value of 15 (2) \times 10−12 m V−1 is between the two values of 10.4 and 25.8 \times 10−12 m V−1 found in the literature. The value of d 33 is shown to be constant over the temperature range 100–220 K and no anomaly was observed at the conductor–insulator transition at 150 K. The results obtained are believed to be sample-independent, since the same value was obtained for two different crystals, measured at different sources.

Molecular reorientation in an electric field as studied by single-crystal X-ray diffraction

1992 ◽  
Vol 48 (2) ◽  
pp. 113-120 ◽  
Author(s):  
H. Graafsma ◽  
A. Paturle ◽  
L. Wu ◽  
H. S. Sheu ◽  
J. Majewski ◽  
...  
Keyword(s):  
Electric Field ◽  
Single Crystal ◽  
X Ray Diffraction ◽  
Molecular Reorientation ◽  
X Ray
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