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Journal articles on the topic 'Electromechanical coupling coefficient'

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Published: 4 June 2021
Last updated: 18 February 2022

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1

Lin, Dung Hung, Huang Hsing Pan, Chang Geng Jiang, and Hui Chuan Hung. "Effect of Pozzolanic Materials and Poling Field on Electromechanical Coupling Coefficient of Cement-Based Piezoelectric Composites." Advanced Materials Research 512-515 (May 2012): 2867–72. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.2867.

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Electromechanical coupling coefficient of cement-based piezoelectric composites affected by pozzolanic materials and poling field are investigated. Specimens, through a pressure approach, are manufactured by combining PZT powders and cement-based binder with the same volume fraction. Pozzolanic materials including fly ash, slag and silica fume replace 20% cement in the binder. Three poling fields are considered to induce piezoelectricity of 0-3 cement-based composites. Results show that electromechanical coupling coefficients do not have many fluctuations in terms of material ages for any ceme
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2

Wang, Chun Huy. "Physical and Electrical Properties of Lead-Free (Na0.5K0.5)NbO3-(Bi0.5Na0.5)TiO3 Ceramics." Advanced Materials Research 201-203 (February 2011): 2772–75. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.2772.

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Lead-free (1-x)(Na0.5K0.5)NbO3-x(Na0.5Bi0.5)TiO3(x=0.02, 0.04, 0.06, 0.08, and 0.10) ceramics have been prepared by the conventional mixed oxide process. For 0.98(Na0.5K0.5)NbO3-0.02(Na0.5Bi0.5)TiO3ceramics, the electromechanical coupling coefficients of the planar mode kp and the thickness mode kt reach 0.33 and 0.62, respectively, after sintering at 1100°C for 5 h. The ratio of the thickness coupling coefficient to the planar coupling coefficient is 1.88. Our results show that 0.98(Na0.5K0.5)NbO3-0.02(Na0.5Bi0.5)TiO3solid solution ceramics are promising lead-free ceramics for high-frequency
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3

Gozum, Mehmet Murat, Amirreza Aghakhani, and Ipek Basdogan. "An investigation of the electromechanical coupling and broadband shunt damping in composite plates with integrated piezo-patches." Journal of Intelligent Material Systems and Structures 30, no. 20 (2019): 3008–24. http://dx.doi.org/10.1177/1045389x19873045.

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The popularity of laminated composite plate-like structures is increasing in various engineering applications. Piezoelectric patches with electrical circuit elements can be integrated into these structures for shunt damping applications. For analyzing the shunt damping performance of these systems, precise modeling tools are required, which consider the two-way electromechanical coupling between the piezo-patches and the host plate. This study aims to identify the system parameters which affect the electromechanical coupling coefficient, a metric for measuring the effectiveness of mechanical-t
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4

Kim, Moojoon, Jungsoon Kim, and Wenwu Cao. "Electromechanical coupling coefficient of an ultrasonic array element." Journal of Applied Physics 99, no. 7 (2006): 074102. http://dx.doi.org/10.1063/1.2180487.

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5

Chen, Chao, Li Yang, Xingan Jiang, et al. "Ultrahigh Electromechanical Coupling and Its Thermal Stability in (Na1/2Bi1/2)TiO3-Based Lead-Free Single Crystals." Crystals 10, no. 6 (2020): 435. http://dx.doi.org/10.3390/cryst10060435.

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In this work, we report the ultrahigh electromechanical coupling performance of NBT-6BT-KNN lead-free single crystal at room temperature. The thickness mode electromechanical coupling coefficient (kt) and the 31 mode electromechanical coupling coefficient (k31) reach 69.0% and 45.7%, respectively, which are superior to the PZT-5H lead-based ceramics of kt~60% and k31~39%. In addition, the evolution of the crystal structure and domain morphology is revealed by Raman scattering spectra, a polarizing microscope and piezoelectric force microscopy characterization.
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6

Wang, Chun Huy. "Effect of Bi2O3 Addition on the Electrical and Physical Properties of Lead-Free 0.98(Na0.5K0.5)NbO3-0.02 Ba(Zr0.04Ti0.96)O3 Piezoelectric Ceramics." Key Engineering Materials 434-435 (March 2010): 413–16. http://dx.doi.org/10.4028/www.scientific.net/kem.434-435.413.

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The 0.98(Na0.5K0.5)NbO3–0.02Ba(Zr0.04Ti0.96)O3 ceramics have been prepared following the conventional mixed oxide process. X-ray diffraction analysis revealed that, during sintering, all of the Ba(Zr0.04Ti0.96)O3 diffuses into the lattice of (Na0.5K0.5)NbO3 to form a solid solution, in which a orthorhombic phase with a perovskite structure was found In order to improve the sinterability of the ceramics, Bi2O3 additions were used as a sintering aid. The electromechanical coupling coefficients of the planar mode kp and the thickness mode kt reach 0.3 and 0.55, respectively, at the sintering of 1
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7

Samulionis, Vytautas, Juras Banys, and Yulian Vysochanskii. "The Characterization of Two Dimensional Electrostrictive CuInP2S6 Materials for Transducers." Materials Science Forum 514-516 (May 2006): 230–34. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.230.

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The electromechanical properties of layered, two-dimensional materials of CuInP2S6 family have been investigated. It was shown that, at room temperature, which is above phase transition and under DC bias electric field, these materials behave as a piezoelectric because of electrostriction. In this case, the piezoelectric and electromechanical coupling coefficients are odd functions of the bias field and have a linear dependence on the bias field. The relative changes of ultrasonic velocity are found to have a quadratic dependence on the bias DC field. In bias fields of about 20 kV/m, the value
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8

Wang, Chun Huy. "Effect of Bi2O3 Addition on the Physical and Electrical Properties of Lead-Free (Na0.5Bi0.5)TiO3-Ba(Sn0.08Ti0.92)O3 Ceramics." Advanced Materials Research 415-417 (December 2011): 1051–54. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.1051.

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In the present study, various quantities of Bi2O3were added into 0.98(Na0.5Bi0.5)TiO3-0.02Ba(Sn0.08Ti0.92)O3(0.98NBT-0.02BST) ceramics. High-density samples were obtained through the addition of Bi2O3into 0.98NBT-0.02BST ceramic. It was found that 0.98NBT-0.02BST with the addition of 0~3.0 wt.% Bi2O3exhibit relatively good piezoelectric properties. For 0.98NBT-0.02BST ceramic with the addition of 2 wt.% Bi2O3, the electromechanical coupling coefficients of the planar mode kp and the thickness mode kt reach 0.12 and 0.61, respectively, at the sintering of 1100oC for 3 h. The ratio of thickness
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9

SRINIVAS, K., G. PRASAD, T. BHIMASANKARAM, and S. V. SURYANARAYANA. "ELECTROMECHANICAL COEFFICIENTS OF MAGNETOELECTRIC PZT–CoFe2O4 COMPOSITE." Modern Physics Letters B 14, no. 17n18 (2000): 663–74. http://dx.doi.org/10.1142/s021798490000080x.

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The magnetoelectric property of composite materials consisting of piezoelectric and piezomagnetic constituents are of interest since the stresses induced in them on application of an external magnetic field are converted into electrical signals. The electrical output is primarily due to electromagnetic coupling between the two participating phases. The present paper deals with the evaluation of the electromechanical coupling in the magnetoelectric composite consisting of 50% lead zirconate titanate (Pb0.96Sr0.04Ti0.47Zr0.53O3) and 50% CoFe2O4, the composition having maximum magnetoelectric con
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10

Wang, Chun Huy. "Physical and Electrical Properties of Lead-Free (Bi0.5Na0.5)TiO3-(Na0.5K0.5)NbO3 Ceramics." Materials Science Forum 687 (June 2011): 348–53. http://dx.doi.org/10.4028/www.scientific.net/msf.687.348.

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Lead-free (1-x)(Bi0.5Na0.5)TiO3–x(Na0.5K0.5)NbO3(x<0.1) ceramics have been prepared by the conventional mixed oxide process. X-ray diffraction analysis revealed that, during sintering, all of the (Na0.5K0.5)NbO3diffuse into the lattice of (Bi0.5Na0.5)TiO3to form a solid solution and the hexagonal phase with a perovskite structure. The samples with a low content of (Na0.5K0.5) NbO3exhibit relatively good physical and electrical properties. For 0.96(Bi0.5Na0.5) TiO3–0.04 (Na0.5K0.5) NbO3ceramics, the electromechanical coupling coefficients of the planar modekpand the thickness modektreach 0.2
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11

Wang, Xiaoyu, and Shuyu Lin. "Analysis on the Radial Vibration of Longitudinally Polarized Radial Composite Tubular Transducer." Sensors 20, no. 17 (2020): 4785. http://dx.doi.org/10.3390/s20174785.

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The radial vibration of a radial composite tubular transducer with a large radiation range and power capacity is studied. The transducer is composed of a longitudinally polarized piezoelectric ceramic tube and a coaxial outer metal tube. Assuming that the longitudinal length is much larger than the radius, the electromechanical equivalent circuits of the radial vibration of a piezoelectric ceramic long tube and a metal long tube are derived and obtained for the first time following the plane strain theory. As per the condition of the continuous forces and displacements of two contact surfaces,
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12

BU, GANG, DAUMANTAS CIPLYS, MICHAEL S. SHUR, LEO J. SCHOWALTER, SANDRA B. SCHUJMAN, and REMIS GASKA. "LEAKY SURFACE ACOUSTIC WAVES IN SINGLE-CRYSTAL AlN SUBSTRATE." International Journal of High Speed Electronics and Systems 14, no. 03 (2004): 837–46. http://dx.doi.org/10.1142/s0129156404002922.

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We report on the velocity V and the electromechanical coupling coefficient K2 of the first and the second leaky surface acoustic waves in various propagation directions in the a-plane AlN single-crystal. For c-propagation direction, the second leaky wave exhibited the velocity of 11016 m/s and K2 of 0.45%. For this direction, the temperature coefficient of frequency was found to be -30 ppm/°C. A near match of the velocities of the plane and leaky waves in the a-plane AlN allowed us to establish analytical relationships between the piezoelectric and elastic constants. A full set of elastic and
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13

Wang, Chun Huy. "Effect of Nb2O5 Addition on the Physical and Electrical Properties of Lead-Free (Na0.5Bi0.5)TiO3 -Ba(Sn0.08Ti0.92)O3 Ceramics." Advanced Materials Research 393-395 (November 2011): 72–75. http://dx.doi.org/10.4028/www.scientific.net/amr.393-395.72.

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In this paper, (Na0.5Bi0.5)TiO3 -based solid solutions were studied to improve piezoelectric properties as those found in the PbZrO3-PbTiO3 (PZT)-based ceramics. The 0.98(Na0.5Bi0.5)TiO3 -0.02Ba(Sn0.08Ti0.92)O3 (0.98NBT-0.02BST) ceramics with the addition of 0~2.0 wt.% Nb2O5 have been prepared following the conventional mixed oxide process. X-ray diffraction analysis revealed that, during sintering, all of the Ba(Sn0.08Ti0.92)O3 diffuse into the lattice of (Na0.5Bi0.5)TiO3 to form a solid solution, in which a hexagonal phase with a perovskite structure was found. For 0.98NBT-0.02BST ceramics w
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14

Bichurin, Mirza I., Vladimir M. Petrov, Roman V. Petrov, and Shashank Priya. "Electromechanical Resonance in Magnetoelectric Composites: Direct and Inverse Effect." Solid State Phenomena 189 (June 2012): 129–43. http://dx.doi.org/10.4028/www.scientific.net/ssp.189.129.

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Magnetoelectric (ME) coupling in the composites is mediated by the mechanical stress and one would expect orders of magnitude stronger coupling when the frequency of the ac field is tuned to acoustic mode frequencies in the sample than at non-resonance frequencies. A model is presented for the increase in ME coupling in magnetostrictive-piezoelectric bilayers for the longitudinal, radial, and bending modes in the electromechanical resonance region. We solved the equation of medium motion taking into account the magnetostatic and elastostatic equations, constitutive equations, Hooke's law, and
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15

Gong, Li Jiao, Cheng Liang Pan, and Qiao Sheng Pan. "Analysis of the actuating effects of triple-layer piezoelectric cantilevers considering electromechanical coupling correction." Modern Physics Letters B 31, no. 04 (2017): 1750024. http://dx.doi.org/10.1142/s0217984917500245.

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A dynamic analytical model is developed to predict the performance of a triple-layer piezoelectric cantilever as actuators in relation to materials with large piezoelectric and electromechanical coupling (EMC) coefficients under axial stress and plane strain conditions. The dynamic electromechanical behavior of a symmetrical triple-layer piezoelectric cantilever (STLPC) actuator is investigated. The analytical model of STLPC based on electromechanical coupling correction coefficient (EMCC) is established in one-dimensional (1D) form and applied to 1D and 2D deformations. Furthermore, the theor
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16

Vendik, Orest, and Irina Vendik. "Electromechanical coupling coefficient of isotropic sample with a marked electrostriction." Journal of the European Ceramic Society 27, no. 8-9 (2007): 2949–52. http://dx.doi.org/10.1016/j.jeurceramsoc.2006.11.068.

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17

Kim, Moojoon, Jungsoon Kim, and Wenwu Cao. "Aspect ratio dependence of electromechanical coupling coefficient of piezoelectric resonators." Applied Physics Letters 87, no. 13 (2005): 132901. http://dx.doi.org/10.1063/1.2053366.

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18

YAMADA, Keisuke, Hiroshi MATSUHISA, Hideo UTSUNO, and Jeong Gyu PARK. "Precise Measuring Method of Electromechanical Coupling Coefficient of Piezoelectric Element." Transactions of the Japan Society of Mechanical Engineers Series C 71, no. 710 (2005): 2896–903. http://dx.doi.org/10.1299/kikaic.71.2896.

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19

Chen, Qingming, and Qing-Ming Wang. "The effective electromechanical coupling coefficient of piezoelectric thin-film resonators." Applied Physics Letters 86, no. 2 (2005): 022904. http://dx.doi.org/10.1063/1.1850615.

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20

Cheng, Xin, Dong Yu Xu, Shuang Shuang Liao, and Shi Feng Huang. "Influence of Base Thickness on Properties of 1-3-2 Connectivity Cement Based Piezoelectric Composite." Advanced Materials Research 306-307 (August 2011): 835–38. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.835.

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Sulphoaluminate cement and Lead Niobium-Magnesium Zirconate Titanate ceramic (PMN) were used as matrix and functional component to fabricate 1-3-2 piezoelectric ceramic-cement composites by dicing and filling method. The influences of base thickness on piezoelectric, dielectric and electromechanical coupling properties of the composites were analyzed and discussed. The results show that with increasing the base thickness, the piezoelectric stain factor d33 increases gradually, while the piezoelectric voltage factor g33 decreases. The relative dielectric factor εr decreases initially and then i
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21

Delpero, Tommaso, Andrea E. Bergamini, and Paolo Ermanni. "Identification of electromechanical parameters in piezoelectric shunt damping and loss factor prediction." Journal of Intelligent Material Systems and Structures 24, no. 3 (2012): 287–98. http://dx.doi.org/10.1177/1045389x12457253.

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Shunted piezoelectric elements have been studied for several years as promising devices for vibration damping. Different shunting techniques have been developed to deal with the vibration energy in the appropriate way. The energy dissipated by all these techniques, expressed in terms of loss factor or damping ratio, mainly depends on two different contributions: the electromechanical coupling and the shunt design. Therefore, an accurate prediction of the damping is based on a reliable identification of the generalized coupling coefficient that completely describes the electromechanical couplin
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22

Wang, Chun Huy. "Effect of Bi2O3 Addition on the Microstructure and Electrical Properties of Lead-Free (Na0.5K0.5)NbO3-Ba(Sn0.02Ti0.98)O3 Ceramics." Applied Mechanics and Materials 284-287 (January 2013): 3–7. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.3.

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PbZrO3-PbTiO3 (PZT)-based ceramics are playing a dominant role in piezoelectric materials, their evaporation of harmful lead oxide during the sintering process causes a crucial environment problem. It is necessary to search for lead-free piezoelectric materials that have such excellent properties as those found in the PZT-based ceramics. Therefore (Na0.5K0.5)NbO3-based solid solutions were studied to improve piezoelectric properties. In the present study, various quantities of Bi2O3 were added into 0.98(Na0.5K0.5)NbO3-0.02Ba(Sn0.02Ti0.98)O3 (0.98NKN-0.02BST) ceramics. It was found that 0.98NKN
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23

Moura, Adriane G., and Alper Erturk. "Combined piezoelectric and flexoelectric effects in resonant dynamics of nanocantilevers." Journal of Intelligent Material Systems and Structures 29, no. 20 (2018): 3949–59. http://dx.doi.org/10.1177/1045389x18803441.

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We establish and analyze an analytical framework by accounting for both the piezoelectric and flexoelectric effects in bimorph cantilevers. The focus is placed on the development of governing electroelastodynamic piezoelectric–flexoelectric equations for the problems of resonant energy harvesting, sensing, and actuation. The coupled governing equations are analyzed to obtain closed-form frequency response expressions via modal analysis. The combined piezoelectric–flexoelectric coupling coefficient expression is identified and its size dependence is explored. Specifically, a typical atomistic v
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24

Water, Walter, Yi-Shun Lin, and Chi-Wei Wen. "Love Wave Ultraviolet Photodetector Fabricated on a TiO2/ST-Cut Quartz Structure." International Journal of Photoenergy 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/270186.

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A TiO2thin film deposited on a 90° rotated 42°45′ ST-cut quartz substrate was applied to fabricate a Love wave ultraviolet photodetector. TiO2thin films were grown by radio frequency magnetron sputtering. The crystalline structure and surface morphology of TiO2thin films were examined using X-ray diffraction, scanning electron microscope, and atomic force microscope. The effect of TiO2thin film thickness on the phase velocity, electromechanical coupling coefficient, temperature coefficient of frequency, and sensitivity of ultraviolet of devices was investigated. TiO2thin film increases the ele
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25

Cheng, Xin, Shuang Shuang Liao, Shi Feng Huang, and Li Li Guo. "Influence of Base Thickness on Performance of 1-3-2 Piezoelectric Composite." Advanced Materials Research 123-125 (August 2010): 121–24. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.121.

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Sulphoaluminate cement and Lead Niobium-Magnesium Zirconate Titanate ceramic [P(MN)]ZT were used as matrix and functional phase respectively to fabricate 1-3-2 cement-based piezoelectric composites by dice and filling technique. The influences of base thickness on piezoelectric properties, electromechanical properties and acoustic impedance properties of the composites were discussed. The results show that as the base thickness increases, the piezoelectric stain factor d33 increases gradually, while the piezoelectric voltage factor g33 decreases. The planar electromechanical coupling coefficie
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26

Petrov, Roman V., Alexander S. Tatarenko, Vladimir M. Petrov, and Mirza I. Bichurin. "Magnetoelectric Effect in Ferrite-Piezoelectric Dual-Phase Structure." Solid State Phenomena 233-234 (July 2015): 353–56. http://dx.doi.org/10.4028/www.scientific.net/ssp.233-234.353.

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This manuscript is devoted to the magnetoelectric coupling in a dimensionally graded magnetostrictive-piezoelectric structure in the electromechanical resonance region. Theoretical frequency dependence of ME voltage coefficient is obtained. Theoretical estimates for the layered structure of lead zirconate-titanate and single-crystal Zn0,3Ni0,7Fe2O4 are in satisfactory agreement with data. The obtained results are expected to facilitate observation of enhanced ME coupling at overlapping of electromechanical and magnetic resonance due to energy transfer between spin waves and phonons.
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27

Huang, Siyu, Xiang Xia, Xuezheng Ruan, et al. "Preparation and characterization of piezoelectric ceramics with high electromechanical coupling coefficient." Ferroelectrics 553, no. 1 (2019): 43–50. http://dx.doi.org/10.1080/00150193.2019.1683494.

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28

Fan, Li, Shu-yi Zhang, Kai Zheng, Wei Lin, and Hui-dong Gao. "Calculation of electromechanical coupling coefficient of Lamb waves in multilayered plates." Ultrasonics 44 (December 2006): e849-e852. http://dx.doi.org/10.1016/j.ultras.2006.05.182.

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29

Qin, Lei, Junbo Jia, Minkyu Choi, and Kenji Uchino. "Improvement of electromechanical coupling coefficient in shear-mode of piezoelectric ceramics." Ceramics International 45, no. 2 (2019): 1496–502. http://dx.doi.org/10.1016/j.ceramint.2018.10.018.

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30

Rimeika, R., D. Ciplys, M. S. Shur, R. Gaska, M. A. Khan, and J. Yang. "Electromechanical Coupling Coefficient for Surface Acoustic Waves in GaN-on-Sapphire." physica status solidi (b) 234, no. 3 (2002): 897–900. http://dx.doi.org/10.1002/1521-3951(200212)234:3<897::aid-pssb897>3.0.co;2-9.

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31

Qin, Zhen-Hui, Shu-Mao Wu, Yong Wang, et al. "Solidly Mounted Longitudinally Excited Shear Wave Resonator (YBAR) Based on Lithium Niobate Thin-Film." Micromachines 12, no. 9 (2021): 1039. http://dx.doi.org/10.3390/mi12091039.

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This paper proposed a solid-mounted (SM) longitudinally excited shear wave resonator (i.e., YBAR). By adopting a 200 nm x-cut LiNbO3 film, top (aluminum) and bottom (platinum) electrodes in 50 nm thickness and 500 nm width, this resonator simultaneously achieves an operating frequency over 5 GHz with an electromechanical coupling coefficient exceeding 50%. Compared with previously proposed YBAR with suspended structure, the proposed SM-YBAR can effectively suppress unwanted spurious modes with only a slight loss of the electromechanical coupling coefficient. The SM-YABR also provides better de
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32

Li, Deng Hua, Ke Li, and Yang Cheng. "Research on Electromechanical Properties of Cymbal Piezocomposite Transducer." Materials Science Forum 475-479 (January 2005): 1087–90. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.1087.

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The electromechanical properties of cymbal piezocomposite transducer were investigated in this paper. Piezoelectric ceramic PZT—5A was used as piezoelectric phase of transducer, and brass foil was used as end cap electrode of cymbal piezocomposite transducer. Several types of this transducer were fabricated. The displacements of this transducer as functions of the applied force and the applied electric field were investigated. It was calculated and analyzed for the energy transmission coefficient and electromechanical coupling coefficient of this transducer which optimum values were obtained.
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33

Балашова, Е. В., Б. Б. Кричевцов, С. Н. Попов, П. Н. Брунков, Г. А. Панкова та А. А. Золотарев. "Упругие и пьезоэлектрические параметры кристаллов гистидинфосфита L-Hist·H-=SUB=-3-=/SUB=-РО-=SUB=-3-=/SUB=-, полученные методом электромеханического резонанса". Письма в журнал технической физики 44, № 3 (2018): 69. http://dx.doi.org/10.21883/pjtf.2018.03.45581.17002.

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AbstractSingle crystals of L -histidine phosphite ( L -Hist · H_3РО_3) have been grown from aqueous solution by slow cooling method. The results of elemental analysis, of X-ray-diffraction studies of the crystal structure, and the habitus of the obtained crystals are given. The elastic and piezoelectric coefficients have been measured on the plates with the (010) natural faces by the method of electromechanical resonance for stretching vibrations in the temperature range 295–340 K. Elastic compliance values s _33 and s _22 and the corresponding elastic-moduli values, piezoelectric coefficients
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34

Zhou, Qing-Biao, Yue-kai Lu, and Shu-Yi Zhang. "Extraction of electromechanical coupling coefficient of piezoelectric thin films deposited on substrates." Ultrasonics 39, no. 5 (2001): 377–82. http://dx.doi.org/10.1016/s0041-624x(01)00062-2.

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35

Yaralioglu, G. G., A. S. Ergun, B. Bayram, E. Haeggstrom, and B. T. Khuri-Yakub. "Calculation and measurement of electromechanical coupling coefficient of capacitive micromachined ultrasonic transducers." IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control 50, no. 4 (2003): 449–56. http://dx.doi.org/10.1109/tuffc.2003.1197968.

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36

Čiplys, D., R. Rimeika, Yu N. Korkishko, and V. A. Fedorov. "Enhancement of electromechanical coupling coefficient by proton exchange in Z-cut LiNbO3." Applied Physics Letters 76, no. 4 (2000): 433–35. http://dx.doi.org/10.1063/1.125778.

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37

Nakanishi, Hidekazu, Hiroyuki Nakamura, and Rei Goto. "High-Electromechanical-Coupling-Coefficient Surface Acoustic Wave Resonator on Ta2O5/Al/LiNbO3Structure." Japanese Journal of Applied Physics 49, no. 7 (2010): 07HD21. http://dx.doi.org/10.1143/jjap.49.07hd21.

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38

San Emeterio, J. L., A. Ramos, and A. Ruiz. "On the Measurement of the Electromechanical Coupling Coefficient ktUsing Different Characteristic Frequencies." Ferroelectrics 293, no. 1 (2003): 331–39. http://dx.doi.org/10.1080/714040583.

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39

Rianyoi, Rattiyakorn, Ruamporn Potong, Rattikorn Yimnirun, Ruyan Guo, Amar S. Bhalla, and Arnon Chaipanich. "Electromechanical Coupling Coefficient of 1-3 Connectivity Barium Titanate-Portland Cement Composites." Integrated Ferroelectrics 148, no. 1 (2013): 138–44. http://dx.doi.org/10.1080/10584587.2013.852449.

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Mi, Xuhui, Lei Qin, Qingwei Liao, and Likun Wang. "Electromechanical coupling coefficient and acoustic impedance of 1-1-3 piezoelectric composites." Ceramics International 43, no. 9 (2017): 7374–77. http://dx.doi.org/10.1016/j.ceramint.2017.02.148.

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Wang, Chun Huy, and Ming Qiu Wei. "Microstructure and Electrical Properties of Lead-Free (Na0.5K0.5)NbO3 - Bi0.5(Na0.97K0.03)0.5TiO3 Ceramics." Applied Mechanics and Materials 368-370 (August 2013): 760–63. http://dx.doi.org/10.4028/www.scientific.net/amm.368-370.760.

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(Na0.5K0.5)NbO3 with Bi0.5(Na0.97K0.03)0.5TiO3 with x≤0.05 has been prepared by the conventional mixed oxide process. X-ray diffraction analysis revealed that, during sintering, all the Bi(Na0.97K0.03)TiO3 diffuses into the lattice of (Na0.5K0.5)NbO3 to form a solid solution with a perovskite structure. A morphotropic phase boundary (MPB) between orthorhombic (O) and rhombohedral (R) was found at the composition 0.98(Na0.5K0.5)NbO3-0.02Bi0.5(Na0.97K0.03)0.5TiO3 [abbreviated as 0.98NKN-0.02BNKT] with correspondingly enhanced dielectric and piezoelectric properties. For 0.98NKN-0.02BNKT ceramics
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XU, LIANG, and SHENGPING SHEN. "SIZE-DEPENDENT PIEZOELECTRICITY AND ELASTICITY DUE TO THE ELECTRIC FIELD-STRAIN GRADIENT COUPLING AND STRAIN GRADIENT ELASTICITY." International Journal of Applied Mechanics 05, no. 02 (2013): 1350015. http://dx.doi.org/10.1142/s1758825113500154.

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A size-dependent nonclassical Bernoulli–Euler beam model based on the strain gradient elasticity is proposed for piezoelectric nanowires. The governing equations and the corresponding boundary conditions are naturally derived from the variational principle. Different from the classical piezoelectric beam theory, the electric field–strain gradient coupling and the strain gradient elasticity are both taken into account. Static bending problem of a cantilever piezoelectric nanobeam is solved to illustrate the effect of strain gradient. The present model contains material length scale parameters a
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Wang, Chun Huy. "Structure and Electrical Properties of Lead-Free (Bi0.5Na0.5)TiO3-Ba(Sn,Ti)O3 Ceramics." Advanced Materials Research 148-149 (October 2010): 232–35. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.232.

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Extending the investigations on (Bi0.5Na0.5)TiO3-based solid solution for lead-free piezoelectric ceramics, this paper consider the complex solid-solution system (Bi0.5Na0.5)TiO3-Ba(Sn,Ti)O3. X-ray diffraction analysis revealed that, during sintering, all of the Ba(Sn,Ti)O3 diffuses into the lattice of (Bi0.5Na0.5)TiO3 to form a solid solution, in which a rhombohedral phase with a perovskite structure was found. It was found that the samples with a low content of Ba(Sn0.06Ti0.94)O3 exhibit relatively good physical and electric properties. For 0.98(Bi0.5Na0.5)TiO3-0.02Ba(Sn0.06Ti0.94)O3 ceramic
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Zheng, Zhiwei, Feng Li, Xiuchang Huang, Zhiwei Su, and Hongxing Hua. "Low frequency vibration suppression of a moderate thick cabin structure by multiple piezoelectric patches shunted with RL-double negative capacitance circuits." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 5 (2021): 1299–307. http://dx.doi.org/10.3397/in-2021-1807.

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Multiple piezoelectric patches shunted with RL-double negative capacitances circuits, which are bonded on the bulkhead, are proposed to control the resonant response of multiple low frequency modes of a moderate thick cabin structure. Dynamic modeling of the electromechanical coupling system of the cabin structure and the piezoelectric shunt circuit is established by employing the three-dimensional finite element. Optimum tuning strategy is based on the trial and error method. It is shown that the proposed approach is effective in enhancing the generalized electromechanical coupling coefficien
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Bai, Wang Feng, Wei Li, Bo Shen, and Ji Wei Zhai. "Piezoelectric and Strain Properties of Strontium-Doped BZT-BCT Lead-Free Ceramics." Key Engineering Materials 512-515 (June 2012): 1385–89. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.1385.

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Lead-free piezoelectric ceramics, (Ba0.85-xSrxCa0.15)(Zr0.1Ti0.9)O3 (BSCZT, x=0.01-0.07), were prepared via a solid-state reaction route. The dielectric properties, ferroelectric properties, piezoelectric and strain properties of BSCZT ceramics were studied. The phase structure and microstructure were investigated by X-ray diffraction and scanning electron microscope, respectively. Results showed that dense ceramics with pure perovskite phase were obtained. At room temperature, the samples with x=0.03 exhibited excellent properties with large piezoelectric coefficient d33=534pC/N, planar mode
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Wang, Chun Huy. "Physical and Electrical Properties of Lead-Free (Bi0.5Na0.5)TiO3–(Bi0.5K0.5)TiO3 Ceramics." Advanced Materials Research 239-242 (May 2011): 3240–43. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.3240.

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Extending the investigations on (Bi0.5Na0.5)TiO3-based solid solution for lead-free piezoelectric ceramics, this paper consider the complex solid-solution system (Bi0.5Na0.5)TiO3–(Bi0.5K0.5)TiO3[BNT-BKT]. (Bi0.5Na0.5)TiO3with 7~ 30 mol% (Bi0.5K0.5)TiO3ceramics have been prepared following the conventional mixed oxide process. A morphotropic phase boundary (MPB) between rhombohedral (R) and tetragonal (T) was found at the composition 0.82BNT-0.18BKT with correspondingly enhanced piezoelectric properties. The electromechanical planar coupling factor is higher for compositions near the MPB. The m
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Petrov, Roman V., Vladimir M. Petrov, Denis V. Kovalenko, Gennady A. Semenov, and Mirza I. Bichurin. "Magnetic Field Tunable Electromechanical Resonance Properties of Magnetoelectric Bilayer." Solid State Phenomena 233-234 (July 2015): 349–52. http://dx.doi.org/10.4028/www.scientific.net/ssp.233-234.349.

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The present paper focuses on the magnetoelectric coupling in dimensionally graded ferrite-piezoelectric bilayers in the electromechanical resonance region. Using the bilayer as a transducer which converts the ac magnetic field into an ac electric field shows that the transmission coefficient equals approximately -83 dB for zero bias magnetic field and -44 dB for bias field of 340 Oe. Thus, applying the DC field enables one to obtain the transmission coefficient variation range of 39 dB for the investigated structure. The phenomenon is of importance for the realization of multifunctional magnet
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Zhou, Zhen Kai, and Jie Feng. "Simulation of Characteristics of ZnO/Diamond/Si Surface Acoustic Wave." Applied Mechanics and Materials 389 (August 2013): 62–66. http://dx.doi.org/10.4028/www.scientific.net/amm.389.62.

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Based on the recursive stiffness matrix method, the effective surface permittitivity model of multilayered Surface Acoustic Wave structure was established. By this model the phase velocity dispersive of ZnO/Si layered structure was calculated. The calculation results is in agreement with the experimental results ,which verifies effectiveness and accuracy of the model. Furthermore, the model was also carried out for the determination of the phase velocity and electromechanical coupling coefficients of ZnO/Diamond/Si structure. The best combination of high velocity and high coupling coefficient
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Soni, Namrata Dewan, and Jyoti Bhola. "Enhanced Properties of SAW Device Based on Beryllium Oxide Thin Films." Crystals 11, no. 4 (2021): 332. http://dx.doi.org/10.3390/cryst11040332.

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The present study depicts the first-ever optimized surface acoustic wave (SAW) device based on Beryllium Oxide (BeO) thin film. The feasibility of surface acoustic wave devices based on BeO/128° YX LiNbO3 layered structure has been examined theoretically. The SAW phase velocity, electromechanical coupling coefficient, and temperature coefficient of delay for BeO/128° YX LiNbO3 layered structure are calculated. The layered structure is found to exhibit optimum value of phase velocity (4476 ms−1) and coupling coefficient (~9.66%) at BeO over layer thickness of 0.08 λ. The BeO (0.08 λ)/128° YX Li
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Zhang, R., X.-Q. Jiao, J. Yang, H. Zhong, and Y. Shi. "Electrode influence on effective electromechanical coupling coefficient of thin film bulk acoustic resonators." Materials Research Innovations 18, sup4 (2014): S4–606—S4–609. http://dx.doi.org/10.1179/1432891714z.000000000753.

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