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[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics最新文献

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Ferroelectric and piezoelectric properties of beta -form PVDF films crystallized under high pressures and their application to high temperature ultrasonic transducers 高压结晶型PVDF薄膜的铁电和压电性能及其在高温超声换能器中的应用
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200352
H. Ohigashi, T. Hattori, T. Watanabe, G. Li, S. Takahashi, M. Hikosaka
{"title":"Ferroelectric and piezoelectric properties of beta -form PVDF films crystallized under high pressures and their application to high temperature ultrasonic transducers","authors":"H. Ohigashi, T. Hattori, T. Watanabe, G. Li, S. Takahashi, M. Hikosaka","doi":"10.1109/ISAF.1990.200352","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200352","url":null,"abstract":"Summary form only given. Piezoelectric and ferroelectric properties of high-pressure-crystallized PVDF (polyvinylidene fluoride) film were evaluated, and ultrasonic transducers usable at high temperatures up to 200 degrees C were developed. The film crystallized in the hexagonal phase showed distinctive ferroelectric properties. The poled film exhibited persistent piezoelectric activity in a temperature range extending just below the melting point, and an electromechanical coupling factor k/sub t/ of 0.1-0.2. Ultrasonic transducers were fabricated using this film. These transducers have proved to be applicable for measurements of acoustical properties of materials at high temperatures above 150 degrees .<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124830966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Properties of PZT multilayer actuators PZT多层致动器的性能
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200301
K. Lubitz, H. Hellebrand
{"title":"Properties of PZT multilayer actuators","authors":"K. Lubitz, H. Hellebrand","doi":"10.1109/ISAF.1990.200301","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200301","url":null,"abstract":"PZT (lead zirconate titanate) multilayer actuators have small volume, fast response, low power consumption, and low driving voltage. The fabrication of such parts, however, has some limitations. The use of AgPd for inner electrodes allows maximum sintering temperatures of only about 1100 degrees C. This can be achieved by a modified ceramic process and by the choice of appropriate material compositions. The internal stresses due to the combination of piezoactive layers and thin metal electrodes have to be minimized by suitable geometric design. Bimorph or plate actuators operated in the length extensional mode have an appropriate geometry so that the influence of the multilayer technology on the piezoelectric properties can be studied. These properties are given as a function of the number and thickness of the PZT layers. By comparison with calculated values the separate influence of the internal electrodes can be shown. Data for bimorph actuators with 30- mu m PZT layers and with a driving voltage down to 9 V are presented.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130392486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
Mechanical and electrical properties of piezoelectric ceramics under repeated compression fatigue tests 反复压缩疲劳试验下压电陶瓷的力学和电学性能
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200225
T. Tanimoto, T. Yamamoto, K. Okazaki
{"title":"Mechanical and electrical properties of piezoelectric ceramics under repeated compression fatigue tests","authors":"T. Tanimoto, T. Yamamoto, K. Okazaki","doi":"10.1109/ISAF.1990.200225","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200225","url":null,"abstract":"Static compression and repeated compression fatigue tests were carried out for piezoelectric ceramics of the PZT family with dimensions of 5 mm in diameter and 10 mm in length. Both tests were conducted under three electrically different conditions to investigate the effects of poling in the samples. It was clarified as a result that the poled samples have a higher compressive strength and fatigue resistance when used between electrically insulated jibs. The correlation between changes of piezoelectric properties and the number of fatigue cycles is discussed.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127160293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Molecular engineering of phase transition temperatures in dodecasil-3C clathrasils 十二烷- 3c笼基相变温度的分子工程研究
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200297
H. Chae, W. Klemperer, D. Payne, C. Suchicital
{"title":"Molecular engineering of phase transition temperatures in dodecasil-3C clathrasils","authors":"H. Chae, W. Klemperer, D. Payne, C. Suchicital","doi":"10.1109/ISAF.1990.200297","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200297","url":null,"abstract":"Single crystals of the dodecasil-3C clathrasils 17SiO/sub 2/-M (M=cyclohexane, cyclopentane, piperidine, pyrrolidine, cyclopentylamine, and cyclobutylamine) were grown using hydrothermal techniques. The influence that the organic guest molecule in a given silica host framework has on the bulk properties of the clathrasil was demonstrated. Each material displayed two phase transitions, one between 59 and 180 degrees C and the other between -110 and -1 degrees C. These phase transition temperatures could be systematically varied by varying the size of the guest molecule.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"03 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127189099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Processing and properties of sol-gel derived lithium niobate thin-layers 溶胶-凝胶衍生铌酸锂薄层的制备及性能研究
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200235
D. Eichorst, D. S. Hagberg, D. Payne
{"title":"Processing and properties of sol-gel derived lithium niobate thin-layers","authors":"D. Eichorst, D. S. Hagberg, D. Payne","doi":"10.1109/ISAF.1990.200235","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200235","url":null,"abstract":"Sol-gel processing was investigated as a method of deposition for lithium niobate thin layers on a variety of substrates, including silicon, platinum, and sapphire. The influence of solution chemistry and thermal processing conditions on microstructure developed was studied especially for the integration of LiNbO/sub 3/ on Si. An ethanol-based system gave dense layers with grain sizes ranging between 0.1 and 0.2 mu m. Methoxyethanol-based systems also produced dense layers, but the grain sizes were somewhat larger, approaching 0.5 mu m. Electrical properties are reported for LiNbO/sub 3/ on Pt. The layers had preferred orientation, with values of dielectric constant and loss tangent of 22 and 0.005, respectively, at 25 degrees C and 1 MHz.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117016729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Integrated SAW-AO-deflector and photo-detector on Si Si上集成saw - ao偏转器和光电探测器
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200245
T. Shiosaki, N. Kitamura, A. Kawabata
{"title":"Integrated SAW-AO-deflector and photo-detector on Si","authors":"T. Shiosaki, N. Kitamura, A. Kawabata","doi":"10.1109/ISAF.1990.200245","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200245","url":null,"abstract":"Described is the integration of a thin-film optical waveguide, a surface acoustic wave (SAW) guide, an acoustooptic Bragg deflector, a mode index lens, a mode filter, and two Schottky photodiodes on a Si substrate, where the piezoelectric, acoustic, optic, and acoustooptic properties of ZnO were used. A thin-film lens was fabricated by making use of a gradual film thickness change, the refractive index dispersion of the fundamental mode on the film thickness, and the mode cutoff property of the higher-order modes in the area of the concave convergent lens of the ZnO film. The guided optical waves that were SAW-Bragg deflected, mode selected, and lens focused were detected by the Schottky diode photodetector incorporated at the boundary between the ZnO film waveguide and the Si substrate.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117131078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Particle size dependence of ferro- and antiferroelectricity 铁电性和反铁电性的粒度依赖性
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200326
T. Yamakawa, K. Uchino
{"title":"Particle size dependence of ferro- and antiferroelectricity","authors":"T. Yamakawa, K. Uchino","doi":"10.1109/ISAF.1990.200326","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200326","url":null,"abstract":"The authors deal with the particle size dependence of the crystallographic structure and Curie/Neel temperature in powder samples. Ferroelectric Ba/sub 0.9/Sr/sub 0.1/TiO/sub 3/ and antiferroelectric PbZrO/sub 3/ were selected for this investigation. The phase transition temperature T/sub C/ in the ferroelectric decreased with decreasing particle size, while T/sub N/ in the antiferroelectric changed insensitively with particle size. This dependence may mainly be caused by the effective surface tensional stress estimated by P=2 gamma /R, where gamma is the surface tension ( approximately 50-67 N/m) and R is the radius of the particle.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120808508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
New ferroelectric polymer ultrasound contact transducers for nondestructive testing applications 用于无损检测的新型铁电聚合物超声接触换能器
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200303
L. Brown
{"title":"New ferroelectric polymer ultrasound contact transducers for nondestructive testing applications","authors":"L. Brown","doi":"10.1109/ISAF.1990.200303","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200303","url":null,"abstract":"The development of both single-element and multielement nondestructive testing (NDT) contact ultrasound transducers based on piezo-polymers is reported. The performance of single-element contact transducers is illustrated in pulse-echo and through-transmission waveforms taken from a variety of materials including nonplanar structures. Multielement transducer arrays based on the same design technology have also been developed. Nine-element arrays of two different 3*3 patterns have been constructed with overall thicknesses of 0.006-0.020 in., depending on the desired frequency of the design. Their flexible thin profile and broadband performance are illustrated in a novel NDT application.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"65 21","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120883519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Dielectric properties of BaTiO/sub 3/-nylon composites BaTiO/sub - 3/-尼龙复合材料的介电性能
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200257
B. Nayak, P. Talwar, A. Mansingh
{"title":"Dielectric properties of BaTiO/sub 3/-nylon composites","authors":"B. Nayak, P. Talwar, A. Mansingh","doi":"10.1109/ISAF.1990.200257","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200257","url":null,"abstract":"Barium-titanate-nylon composites have been prepared by mixing finely powdered BaTiO/sub 3/ in a viscous solution of nylon dissolved in formic acid. The dielectric constant showed a peak around 40 volume percent composition of BaTiO/sub 3/. A comparison of the theoretical density with measured densities showed that the porosity of samples increased with an increasing concentration of BaTiO/sub 3/. The dielectric constant was theoretically calculated for a three-phase system i.e., BaTiO/sub 3/-nylon and air. The fraction of air was estimated from the difference in the measured and theoretical density. The experimentally observed dielectric behavior could be fitted to the theoretical curve by assuming a lower value for the dielectric constant of BaTiO/sub 3/. The lower value of the dielectric constant in finely powdered samples may be caused by the nonferroelectric surface layers of low dielectric constant at the boundary of the crystallites.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131036156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Electromechanical nonlinearity of ferroelectric ceramics and 90 degrees domain wall motions 铁电陶瓷的机电非线性与90度畴壁运动
[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics Pub Date : 1990-06-06 DOI: 10.1109/ISAF.1990.200252
S. Li, W. Cao, A. Bhalla, U. Kumar, L. Cross
{"title":"Electromechanical nonlinearity of ferroelectric ceramics and 90 degrees domain wall motions","authors":"S. Li, W. Cao, A. Bhalla, U. Kumar, L. Cross","doi":"10.1109/ISAF.1990.200252","DOIUrl":"https://doi.org/10.1109/ISAF.1990.200252","url":null,"abstract":"By using an optical interferometer and other more conventional methods, the responses of piezoelectric and dielectric coefficients of lead zirconate-titanate (PZT) ceramics to AC electric fields have been directly investigated. The experimental results demonstrate the importance of electromechanical nonlinearities present in the ferroelectric ceramics. A phenomenological theory, based on a model of G Arlt et al. (1987), has been extended to describe the extrinsic contribution to piezoelectric, elastic, and dielectric coefficients. This can be attributed to both the linear and nonlinear vibrations of 90 degrees domain walls in tetragonally distorted ferroelectric ceramics. The proposed theory shows qualitative agreement with the experimental results.<<ETX>>","PeriodicalId":269368,"journal":{"name":"[Proceedings] 1990 IEEE 7th International Symposium on Applications of Ferroelectrics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131230114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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