Domain Wall Engineering in Barium Titanate Single Crystals for Enhanced Piezoelectric Properties

2006 ◽  
Vol 334 (1) ◽  
pp. 17-27 ◽  
Author(s):  
S. Wada ◽  
K. Yako ◽  
K. Yokoo ◽  
H. Kakemoto ◽  
T. Tsurumi
Keyword(s):  
Barium Titanate ◽  
Domain Wall ◽  
Single Crystals ◽  
Piezoelectric Properties

Domain Wall Engineering in Potassium Niobate Single Crystals and Their Piezoelectric Properties

2006 ◽  
pp. 147-150
Author(s):  
Keisuke Yokoh ◽  
Song Min Nam ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi ◽  
Hirohiko Kumagai ◽  
...  
Keyword(s):  
Domain Wall ◽  
Single Crystals ◽  
Piezoelectric Properties ◽  
Potassium Niobate

Electromechanical Poling Treatment of Barium Titanate Single Crystals and their Piezoelectric Properties

2007 ◽  
Vol 350 ◽  
pp. 73-76
Author(s):  
Tomomitsu Muraishi ◽  
Keisuke Yokoh ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi ◽  
Satoshi Wada
Keyword(s):  
Phase Transition ◽  
Barium Titanate ◽  
Single Crystals ◽  
Electric Fields ◽  
Piezoelectric Properties ◽  
Uniaxial Stress ◽  
Notation System

The phase transition behaviors of the [111]c oriented barium titanate (BaTiO3) single crystals (the subscript c means the cubic notation system) were investigated as functions of temperature, uniaxial stress and electric fields. These results suggested that above Tc, combination between uniaxial stress and electric fields might be effective for a poling treatment of BaTiO3 single crystals. Thus, a new poling method for BaTiO3 single crystals was proposed using control of temperature, uniaxial stress and electric fields in this study.

Development of Lead-Free Piezoelectric Materials Using Domain Wall Engineering

2006 ◽  
Vol 320 ◽  
pp. 151-154
Author(s):  
Satoshi Wada ◽  
Koichi Yako ◽  
Tomomitsu Muraishi ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi
Keyword(s):  
Barium Titanate ◽  
Domain Wall ◽  
Electric Field ◽  
Single Crystals ◽  
Electric Fields ◽  
Applied Electric Field ◽  
Piezoelectric Materials ◽  
Domain Size ◽  
Lead Free ◽  
Gradient Domain

For the [111] oriented barium titanate (BaTiO3) single crystals, the patterning electrode was applied to induce the finer engineered domain configurations with domain size of 3 2m. The poling treatment was performed at 134 °C under electric fields below 6 kV/cm to inhibit the burning of the patterning electrode with photoresist. As the results, the gradient domain sizes from 3 to 8-9 2m were induced into the 31 resonator. The d31 was measured at -243.2 pC/N, and this value was almost 70 % of the expected d31 of –337.7 pC/N for the resonator with domain size of 3 2m. This difference was originated from lower applied electric field below 6 kV/cm. However, this study was revealed that the patterning electrode was very powerful tool to induce much finer domain sizes below 5 2m.

Enhanced Piezoelectric Property of Barium Titanate Single Crystals by Domain Wall Engineering Using Patterning Electrode

2006 ◽  
Vol 340 (1) ◽  
pp. 17-24 ◽  
Author(s):  
S. Wada ◽  
K. Yako ◽  
T. Muraishi ◽  
K. Yokoh ◽  
S. -M. Nam ◽  
...  
Keyword(s):  
Barium Titanate ◽  
Domain Wall ◽  
Piezoelectric Property ◽  
Single Crystals

Enhanced piezoelectric properties of barium titanate single crystals with different engineered-domain sizes

2005 ◽  
Vol 98 (1) ◽  
pp. 014109 ◽  
Author(s):  
Satoshi Wada ◽  
Koichi Yako ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi ◽  
Takanori Kiguchi
Keyword(s):  
Barium Titanate ◽  
Single Crystals ◽  
Piezoelectric Properties

Domain Wall Engineering in Potassium Niobate Single Crystals and Their Piezoelectric Properties

2006 ◽  
Vol 320 ◽  
pp. 147-150
Author(s):  
Keisuke Yokoh ◽  
Song Min Nam ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi ◽  
Hirohiko Kumagai ◽  
...  
Keyword(s):  
Phase Transition ◽  
Domain Wall ◽  
Electric Field ◽  
Single Crystals ◽  
Room Temperature ◽  
Piezoelectric Properties ◽  
Potassium Niobate ◽  
Wall Region ◽  
Domain Configuration ◽  
Piezoelectric Constants

For potassium niobate (KNbO3) single crystal, the 31 resonators with the highest piezoelectric constant d31 were designed using transformation of axis. We confirmed that the engineered domain configurations with maximum d31 of –55.1 pC/N was caused by a combination between two polarization with polar directions along [101]c and [-101]c directions. Moreover, if there are larger piezoelectric constants from domain wall region, we can expect the much higher piezoelectric properties. To induce the above domain configuration, a new poling method using patterning electrode was investigated. In this study, the two methods on the basis of temperature-induced phase transition at 207 °C and electric-field-induced phase transition at room temperature were investigated.

Enhanced Piezoelectric Properties of Barium Titanate Single Crystals by Domain Engineering

2006 ◽  
Vol 301 ◽  
pp. 23-26 ◽  
Author(s):  
Koichi Yako ◽  
Hirofumi Kakemoto ◽  
Takaaki Tsurumi ◽  
Satoshi Wada
Keyword(s):  
Barium Titanate ◽  
Electric Field ◽  
Single Crystals ◽  
Piezoelectric Properties ◽  
Domain Size ◽  
Domain Engineering ◽  
Domain Configuration ◽  
Piezoelectric Measurement ◽  
Batio3 Crystal ◽  
Curie Temperature Tc

Engineered domain configuration was induced into barium titanate (BaTiO3) single crystals, and the d33 piezoelectricity was investigated as a function of domain size. Prior to the domain engineering, the dependence of domain configuration on the temperature and the electric-field was investigated, and above Curie temperature (Tc), when the electric-field over 16 kV/cm was applied along [111]c direction, the fine engineered domain configuration appeared. On the basis of the above information, the 33 resonators with different domain sizes were successfully prepared. Their piezoelectric measurement revealed that the d33 of the 33 resonators with fine-engineered domain configurations were higher than those of BaTiO3 single-domain crystals. Moreover, d33 increased with decreasing domain sizes. The highest d33 of 289 pC/N was obtained in the BaTiO3 crystal with a domain size of 13μm.

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