scholarly journals Investigation of Electro-Elastic Properties for LN Single Crystals at Low Temperature

2021 ◽  
Vol 11 (16) ◽  
pp. 7374
Author(s):  
Feifei Chen ◽  
Chao Jiang ◽  
Fapeng Yu ◽  
Xiufeng Cheng ◽  
Xian Zhao
Keyword(s):  
Single Crystals ◽  
Elastic Properties ◽  
Electromechanical Coupling ◽  
Temperature Stability ◽  
Piezoelectric Response ◽  
Impedance Method ◽  
Shear Vibration ◽  
Temperature Dependences ◽  
Coupling Factors ◽  
Thickness Shear

Lithium niobate crystals (LiNbO3, LN) are multifunctional crystal materials with many outstanding properties. In this work, the electro-elastic properties of LN single crystals were explored at temperatures from −150 °C to 150 °C. The temperature dependences of dielectric permittivities, elastic compliances, electromechanical coupling factors and piezoelectric coefficients were determined using the impedance method. The LN crystals possessed large dielectric permittivities, the ε11T/ε0 and ε33T/ε0 were 83.2 and 29.4 at room temperature, respectively. The elastic compliances s11, s13, s33 and s44 presented a positive increase as the temperature increased, and the variations were 5.0%, 8.2%, 4.6% and 5.4%, respectively, showing a good temperature stability. Moreover, the temperature dependence of the electromechanical coupling factors and piezoelectric coefficients for different vibration modes were studied with a temperature range from −150 °C to 150 °C, where the thickness shear vibration mode d15 presented a large piezoelectric response and minimal temperature variation.

High-Performance Piezoelectric Single Crystals of Complex Perovskite Solid Solutions

MRS Bulletin ◽  
2009 ◽  
Vol 34 (4) ◽  
pp. 277-283 ◽  
Author(s):  
Zuo-Guang Ye
Keyword(s):  
Single Crystals ◽  
Solid Solutions ◽  
High Performance ◽  
Electromechanical Coupling ◽  
Piezoelectric Properties ◽  
High Strain ◽  
Complex Perovskite ◽  
Device Applications ◽  
Coupling Factors ◽  
Piezoelectric Performance

AbstractRelaxor-based single crystals of complex perovskite solid solutions, Pb(Mg1/3Nb2/3)O3–PbTiO3 [PMN–PT] and Pb(Zn1/3Nb2/3)O3–PbTiO3 [PZN–PT], exhibit extraordinary piezoelectric performance, with extremely high piezoelectric coefficients, very large electromechanical coupling factors, and exceptionally high strain levels. These materials outperform the currently used Pb(Zr1–xTix)O3 [PZT] ceramics, making them the materials of choice for the next generation of electromechanical transducers for a broad range of advanced applications. In this article, recent major advances in the development of piezocrystals are reviewed in terms of crystal growth, piezoelectric properties, crystal chemistry, domain structure, and device applications.

scholarly journals Bismuth-Based Oxyborate Piezoelectric Crystals: Growth and Electro-Elastic Properties

Crystals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 29 ◽  
Author(s):  
Feifei Chen ◽  
Xiufeng Cheng ◽  
Fapeng Yu ◽  
Chunlei Wang ◽  
Xian Zhao
Keyword(s):  
Elastic Properties ◽  
Shear Mode ◽  
X Ray Diffraction ◽  
Mechanical Coupling ◽  
Shear Vibration ◽  
The Face ◽  
Device Applications ◽  
Coupling Factors ◽  
Acoustic Device ◽  
Kyropoulos Method

The non-centrosymmetric bismuth-based oxyborate crystals have been extensively studied for non-linear optical, opto-electric and piezoelectric applications. In this work, single crystal growth and electro-elastic properties of α-BiB3O6 (α-BIBO) and Bi2ZnB2O7 (BZBO) crystals are reported. Centimeter-sized α-BIBO and BZBO crystals were grown by using the Kyropoulos method. High resolution X-ray diffraction tests were performed to assess the crystal quality. The full-width at half-maximum values (FWHM) of the rocking curves were evaluated to be 35.35 arcsec and 47.85 arcsec for α-BIBO and BZBO samples, respectively. Moreover, the electro-elastic properties of α-BIBO and BZBO crystals are discussed and summarized, based on which the radial extensional and the face shear vibration modes were studied for potential acoustic device applications. The radial extensional mode electro-mechanical coupling factors kp were evaluated and found to be 32.0% and 5.5% for α-BIBO and BZBO crystals, respectively. The optimal crystal cuts with face shear mode were designed and found to be (YZt)/−53° (or (YZt)/37° cut) for α-BIBO crystal, and (ZXt)/±45° cut for BZBO crystal, with the largest effective piezoelectric coefficients being in the order of 14.8 pC/N and 8.9 pC/N, respectively.

scholarly journals Ultra-large electric field–induced strain in potassium sodium niobate crystals

2020 ◽  
Vol 6 (13) ◽  
pp. eaay5979 ◽  
Author(s):  
Chengpeng Hu ◽  
Xiangda Meng ◽  
Mao-Hua Zhang ◽  
Hao Tian ◽  
John E. Daniels ◽  
...  
Keyword(s):  
Single Crystals ◽  
Electromechanical Coupling ◽  
Piezoelectric Materials ◽  
Mechanical Energy ◽  
Temperature Stability ◽  
Domain Wall Motion ◽  
Electrical Energy ◽  
Potassium Sodium Niobate ◽  
Large Signal ◽  
Compositional Gradient

Electromechanical coupling in piezoelectric materials allows direct conversion of electrical energy into mechanical energy and vice versa. Here, we demonstrate lead-free (KxNa1−x)NbO3 single crystals with an ultrahigh large-signal piezoelectric coefficient d33* of 9000 pm V−1, which is superior to the highest value reported in state-of-the-art lead-based single crystals (~2500 pm V−1). The enhanced electromechanical properties in our crystals are realized by an engineered compositional gradient in the as-grown crystal, allowing notable reversible non-180° domain wall motion. Moreover, our crystals exhibit temperature-insensitive strain performance within the temperature range of 25°C to 125°C. The enhanced temperature stability of the response also allows the materials to be used in a wider range of applications that exceed the temperature limits of current lead-based piezoelectric crystals.

scholarly journals Structure, electrical properties and temperature stability of PIN–PZN–PT piezoelectric ceramics with morphotropic phase boundary compositions

2019 ◽  
Vol 09 (01) ◽  
pp. 1950009
Author(s):  
Tingting Wang ◽  
Longhai Yang ◽  
Kexin Song ◽  
Zhenrong Li ◽  
Zhuo Xu
Keyword(s):  
Electrical Properties ◽  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Electromechanical Coupling ◽  
Temperature Stability ◽  
Piezoelectric Ceramics ◽  
Compositional Dependence ◽  
Strong Trend ◽  
Coupling Factors ◽  
Higher Temperature

A series of Pb(In[Formula: see text]Nb[Formula: see text]O3–Pb(Zn[Formula: see text]Nb[Formula: see text]O3–PbTiO3 (PIN–PZN–PT) ternary piezoelectric ceramics with compositions at the morphotropic phase boundary (MPB) were prepared. The phase structure, microstructure, electrical properties and temperature stability of PIN–PZN–PT ceramics were investigated systematically. The structural analysis indicated that an MPB phase consisting of rhombohedral and tetragonal phases was formed in all ceramics. For the selected compositions, dielectric measurements demonstrated that the Curie temperature [Formula: see text] changed from 237∘C to 295∘C and showed a strong trend of compositional dependence. All the samples showed good piezoelectic properties. Particularly, the 0.35PIN–0.40PZN–0.25PT sample has the optimum piezoelectric properties, the piezoelectric coefficient [Formula: see text] is 589 pC/N, the electromechanical coupling factors [Formula: see text] and [Formula: see text] are 59% and 49%, respectively. Compared with PZN–PT and PMN–PT ferroelectric crystals, the superior limit of usage temperature of PIN–PZN–PT ceramics was achieved around 230∘C by thermal depoling method. These results make PIN–PZN–PT ceramics a promising material to meet the practical demands of higher temperature and larger electric field operating ranges.

Growth and Electric Properties of Al-Substituted Langasite-Type La3Ta0.5Ga5.5O14 Crystals at High Temperature

2006 ◽  
Vol 320 ◽  
pp. 239-242 ◽  
Author(s):  
Hiroaki Takeda ◽  
Satoshi Tanaka ◽  
Hiroyuki Shimizu ◽  
Takashi Nishida ◽  
Tadashi Shiosaki
Keyword(s):  
High Temperature ◽  
Single Crystals ◽  
Electromechanical Coupling ◽  
Solubility Limit ◽  
Electric Resistivity ◽  
Electric Properties ◽  
Czochralski Technique ◽  
Al Substitution ◽  
Coupling Factors ◽  
Lower Temperature

We report an effective substitution of aluminum for gallium in langasite-type La3Ta0.5Ga5.5O14 (LTG) crystals for use in a pressure sensor at high temperature. Al-substituted LTG (La3Ta0.5Ga5.5-xAlxO14; LTGAx) single crystals up to the solubility limit of x=0.5 have been grown by the conventional Czochralski technique. The electric properties of the LTGAx crystals were investigated and compared with those of LTG. By Al substitution, the piezoelectric constant d11 and the electromechanical coupling factors (k12) became slightly larger. The LTGAx crystals showed a lower temperature dependence of d11 and a higher electric resistivity ρ than those of the LTG crystals.

scholarly journals Ангармонизм колебаний кристаллической решетки монокристаллов Bi-=SUB=-2-=/SUB=-Se-=SUB=-3-=/SUB=-

2019 ◽  
Vol 53 (3) ◽  
pp. 309
Author(s):  
З.И. Бадалова ◽  
Н.А. Абдуллаев ◽  
Г.Х. Аждаров ◽  
Х.В. Алигулиева ◽  
С.Ш. Кахраманов ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Single Crystals ◽  
Temperature Variation ◽  
Elastic Properties ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Atomic Masses ◽  
Temperature Dependences ◽  
Strong Spin

AbstractThe temperature dependences of the Raman-active frequencies $$E_{g}^{2}$$ , $$A_{{1g}}^{2}$$ in layered Bi_2Se_3 single crystals are studied. The contribution of the thermal expansion to a temperature variation in the frequencies is determined. The decay of the anisotropy of the elastic properties in layered Bi_2Se_3 single crystals due to strong spin–orbit coupling is shown. The Gruneisen-mode parameters for phonons $$E_{g}^{2}$$ and $$A_{{1g}}^{2}$$ are calculated. Systematic features in the dependences of vibrational frequencies on the atomic masses in layered Bi_2Te_3, Bi_2Se_3, and Sb_2Te_3 single crystals are determined.

Electrical Properties of Grain-Oriented SrBi2Nb2-xVxO9 Ceramics

2006 ◽  
Vol 320 ◽  
pp. 31-34 ◽  
Author(s):  
Shinya Inai ◽  
Yuji Hiruma ◽  
Rintaro Aoyagi ◽  
Hajime Nagata ◽  
Tadashi Takenaka
Keyword(s):  
Electrical Properties ◽  
Low Temperature ◽  
Grain Orientation ◽  
Electromechanical Coupling ◽  
Hot Forging ◽  
Electric Properties ◽  
Orientation Effects ◽  
Temperature Dependences ◽  
Coupling Factors ◽  
Piezoelectric Constants

Vanadium-substituted strontium bismuth niobate, SrBi2Nb2-xVxO9 (SBNVx), ceramics were synthesized by a low-temperature ceramic fabrication process; their electric properties were characterized, and grain orientation effects on their electric properties were also investigated using a hot-forging (HF) method. Resonance characteristics of the (33) and (15) modes of grain-oriented SBNV0.1 (HF) showed relatively high electromechanical coupling factors of k33=0.272 and k15=0.151 as well as piezoelectric constants of d33=31.7 pC/N and d15=24.8 pC/N. The temperature dependences of the resonance frequency (TC-f) of the (33) and (15) modes of the SBNV0.1(HF) ceramics were -16.5 ppm/°C and –25.5 ppm/°C, respectively.

Piezoelectric properties and related parameters of a novel 3–0-type composite

2018 ◽  
Vol 11 (04) ◽  
pp. 1850082 ◽  
Author(s):  
Petr A. Borzov ◽  
Sergei E. Filippov ◽  
Vitaly Yu. Topolov ◽  
Olga E. Brill ◽  
Anatoly E. Panich
Keyword(s):  
Electromechanical Coupling ◽  
Small Volume ◽  
Ferroelectric Ceramic ◽  
Elastic Stiffness ◽  
Piezoelectric Response ◽  
Volume Fractions ◽  
Experimental Parameters ◽  
Coupling Factors ◽  
Type Composite ◽  
Composite Samples

The piezo-active 3–0-type composite that contains the ferroelectric ceramic of the PZT type (main piezoelectric component) and corundum ceramic as a component with a large elastic stiffness is first studied within a range of small volume fractions [Formula: see text] of the corundum component. In the composite samples, almost equal volume fractions of corundum [Formula: see text] and air pores [Formula: see text]are detected at [Formula: see text], and this has no analogies among the studied 3–0-type composites. Results on the piezoelectric response, anisotropy of the piezoelectric coefficients [Formula: see text] and electromechanical coupling factors [Formula: see text]/[Formula: see text] are interpreted within the framework of models put forward, and agreement between the evaluated and experimental parameters at [Formula: see text] is observed. The studied composite can be suitable for transducer, ultrasonic and other applications.

Sign in / Sign up

Export Citation Format

Share Document