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Electrostrictive transducers for medical ultrasonic applications 医用超声用电伸缩换能器
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.602704
Jie Chen, A. Shurland, Jodi L. T. Perry, B. Oßmann, T. R. Gururaja
{"title":"Electrostrictive transducers for medical ultrasonic applications","authors":"Jie Chen, A. Shurland, Jodi L. T. Perry, B. Oßmann, T. R. Gururaja","doi":"10.1109/ISAF.1996.602704","DOIUrl":"https://doi.org/10.1109/ISAF.1996.602704","url":null,"abstract":"Ultrasonic phased or sector array transducers were built using PMN-PT based electrostrictive materials. Large field-induced piezoelectric coefficients were obtained in these relaxor-type materials at relatively low DC bias (K/sub t/=0.43-0.50 at 5 KV/cm). The electrostrictive transducers have similar sensitivity and bandwidth compared to conventional PZT transducers. By choosing the appropriate composition and process, the sensitivity variation of electrostrictive transducers can be minimized to within 3 dB over the operating temperature range. The clinical results demonstrate the benefit of using electrostrictive materials to obtain elevation aperture control.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"7 1","pages":"27-30 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80125598","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: 11
Characterization of sol-gel derived PZT and PLZT thin films 溶胶-凝胶衍生PZT和PLZT薄膜的表征
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.602785
R. Kurchania, S. J. Milne
{"title":"Characterization of sol-gel derived PZT and PLZT thin films","authors":"R. Kurchania, S. J. Milne","doi":"10.1109/ISAF.1996.602785","DOIUrl":"https://doi.org/10.1109/ISAF.1996.602785","url":null,"abstract":"Lead zirconate titanate (PZT) and lead lanthanum zirconate titanate (PLZT) precursor sols were prepared using a diol based sol-gel route. Thin films were deposited by spin coating onto PtrTi/SiO/sub 2//Si substrates. The effects of lanthanum incorporating up to 10 mol% lanthanum to the base PZT 53/47 composition, and the effects of firing temperature (500-700/spl deg/C) on crystallization, microstructure, ferroelectric and dielectric properties have been investigated. Films fired at 700/spl deg/C for 15 minutes with 0, 2 and 5 mole percent lanthanum levels had values of remanent polarization of 31, 23 and 14 /spl mu/C cm/sup -2/ (at 300 kV cm/sup -1/, 60 Hz) and corresponding relative permittivity values of 1485, 830 and 700 respectively.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"57 1","pages":"447-450 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73279370","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 lead containing perovskites oriented for application in electronics and electrooptics 面向电子和光电应用的含铅钙钛矿的性质
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.602722
Andris Sternberg, L. Shebanovs, E. Birks, M. Ozolinsh
{"title":"Properties of lead containing perovskites oriented for application in electronics and electrooptics","authors":"Andris Sternberg, L. Shebanovs, E. Birks, M. Ozolinsh","doi":"10.1109/ISAF.1996.602722","DOIUrl":"https://doi.org/10.1109/ISAF.1996.602722","url":null,"abstract":"Properties of Pb(Zr,Sn,Ti)O/sub 3/, PST, PSN and PLZT ceramics important for various applications in electronics and electrooptics and effects caused by strong electric field and temperature dependence as well as structure ordering, ion substitutions, stoichiometric defects and different type of irradiation are discussed. Some specific characteristics of ordered sharp phase transition PST ceramic with high electrocaloric effect and test of PLZT 8/65/35 relaxor type electrooptic ceramic as infrared Nd:YAG and Er:YAG laser radiation modulators are considered.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"905 1","pages":"121-124 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77498403","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: 1
Flexure-electrical effect in ferroelectric and paraelectric ceramics with perovskite structure 钙钛矿结构铁电和准电陶瓷的挠曲电效应
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.598169
S. Gridnev
{"title":"Flexure-electrical effect in ferroelectric and paraelectric ceramics with perovskite structure","authors":"S. Gridnev","doi":"10.1109/ISAF.1996.598169","DOIUrl":"https://doi.org/10.1109/ISAF.1996.598169","url":null,"abstract":"An electric voltage, arising across a sample of ferroelectric PZT or paraelectric SrTiO/sub 3/ ceramic with perovskite structure under an external bending stress, has been measured over a wide temperature range. Such a flexure-electrical effect occurs in any substance in the presence of a strain gradient. It was discovered that a.c. voltage arising on the sample faces normal to a strain gradient is directly proportional to the amplitude of sample vibrations and the sample thickness. A rather large value of a.c. voltage and its high temperature stability in the range of 20-200/spl deg/C for both materials under study may be interesting from an applications point of view.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"42 1","pages":"891-893 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77630280","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: 1
Characteristic P-E and S-E relationships of hard PZT ceramics under high drive conditions 高驱动条件下硬PZT陶瓷的特性P-E和S-E关系
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.602757
P. J. Stevenson, D. Hall
{"title":"Characteristic P-E and S-E relationships of hard PZT ceramics under high drive conditions","authors":"P. J. Stevenson, D. Hall","doi":"10.1109/ISAF.1996.602757","DOIUrl":"https://doi.org/10.1109/ISAF.1996.602757","url":null,"abstract":"The use of hard PZT ceramic as the piezoelectric element in high power acoustic sources is well established. With the onset of high electric drive levels (>0.6 kV/mm), such materials exhibit increasing dielectric non-linearity and loss as a result of hysteretic ferroelectric domain wall motion. The aims of the present work are to derive the effective high field dielectric and piezoelectric coefficients of hard PZT ceramics by analysis of the measured P-E (polarisation-field) and S-E (strain-field) relationships respectively. The paper deals with the effects of field amplitude and cycling time on the behaviour of standard commercial materials.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"64 1","pages":"313-316 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73726905","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
The role of piezoceramic microactuation for advanced mobility 压电微致动在先进机动性中的作用
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.602736
S. Thakoor, J. Morookian, J. Cutts
{"title":"The role of piezoceramic microactuation for advanced mobility","authors":"S. Thakoor, J. Morookian, J. Cutts","doi":"10.1109/ISAF.1996.602736","DOIUrl":"https://doi.org/10.1109/ISAF.1996.602736","url":null,"abstract":"This paper presents the potential role of piezoceramic microactuation in micro-robotics for future space missions, e.g. unmanned sample-return missions to Mars, in search of life or evidence of prebiotic materials. The focus of the paper is on the advanced mobility with the desired characteristics of high force, displacement, and operability over a wide temperature range, at the cost of lowest possible mass, volume, and power. A comparison of the various actuation technologies including piezoceramic, shape memory alloys, polymeric actuators and magnetostrictive materials is presented. The comparison suggests piezoceramics to be the most promising candidate. The concept of a flexible microactuator based on tailored films of lead lanthanum zirconate titanate, PLZT, deposited on flexible substrates is described. Such flexible microactuators are expected to offer a multifold enhancement in the force and displacement capabilities over those of the current state-of-the-art actuators based on bulk ceramic materials. Of special interest is the promise of high efficiency actuation from an optimized thin film based flexible bimorph structure by contact-less optical activation.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"167 1","pages":"205-211 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74336127","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
Resonant modes, acoustic impedance, and surface vibration profiles of periodic piezoceramic polymer composite plates 周期性压电陶瓷聚合物复合板的共振模式、声阻抗和表面振动剖面
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.598183
X. Geng, Q.M. Zhang, J. Yuan
{"title":"Resonant modes, acoustic impedance, and surface vibration profiles of periodic piezoceramic polymer composite plates","authors":"X. Geng, Q.M. Zhang, J. Yuan","doi":"10.1109/ISAF.1996.598183","DOIUrl":"https://doi.org/10.1109/ISAF.1996.598183","url":null,"abstract":"In this paper, the results of a combined analytical and experimental investigation of many properties, such as the resonant modes, the acoustic impedance, and the surface vibration profile of a periodic piezocomposite plate under different boundary conditions (both in air and in fluid), are presented. Due to the approach in the analysis model, we can quantitatively predict how various modes and their coupling to the thickness resonance change as the aspect ratio of the ceramic plate changes. It is also shown that the input acoustic impedance between a fluid or a solid medium and a composite is dispersive and depends on the medium. These findings will have important implications to the design of the composite, matching layer and backing for a composite ultrasonic transducer.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"5 1","pages":"947-950 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73497505","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
Microstructure and ferroelectric properties of sol-gel PZT thin films on nickel alloy electrode for use with soda-lime glass substrate 钠石灰玻璃衬底镍合金电极上溶胶-凝胶PZT薄膜的微观结构和铁电性能
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.602788
T. Ogawa, N. Ujiie, K. Hukuta
{"title":"Microstructure and ferroelectric properties of sol-gel PZT thin films on nickel alloy electrode for use with soda-lime glass substrate","authors":"T. Ogawa, N. Ujiie, K. Hukuta","doi":"10.1109/ISAF.1996.602788","DOIUrl":"https://doi.org/10.1109/ISAF.1996.602788","url":null,"abstract":"The Ni alloy electrode was used for a bottom electrode of PZT thin films prepared by sol-gel process. Although BaTiO/sub 3/ films had consisted of a perovskite single phase, PZT films were composed of a perovskite phase with second phases of Pb/sub 3/O/sub 4/ and ZrTiO/sub 4/ on the alloy electrode. In order to prevent the second phases forming, the heat treatment time of the electrode was increased to obtain the thicker Al/sub 2/O/sub 3/ layer on the alloy electrode. The second phases decreased with increasing the heat treatment time, however, the phases did not disappear. When BaTiO/sub 3/ films were inserted between the electrodes and PZT films, the grain growth of PZT films was promoted by the existence of the BaTiO/sub 3/ buffer layer, finally, the PZT single phase was obtained. As the tan /spl delta/ of the films decreased with decreasing the amount of the second phases, it became 3.9%, the film of which possessed a remanent polarization of 20 /spl mu/C/cm/sup 2/.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"18 1","pages":"459-462 vol.1"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84165826","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
Fabrication and properties of fine scale 1-3 piezocomposites by modified lost mold method 改性失模法制备1-3微米级压电复合材料及其性能
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.598034
R. Panda, V. Janas, A. Safari
{"title":"Fabrication and properties of fine scale 1-3 piezocomposites by modified lost mold method","authors":"R. Panda, V. Janas, A. Safari","doi":"10.1109/ISAF.1996.598034","DOIUrl":"https://doi.org/10.1109/ISAF.1996.598034","url":null,"abstract":"The fabrication of 1-3 piezoelectric PZT/polymer composites using a modified lost mold method is discussed. The modification is in the method of forming the mold. Two new types of sacrificial polymer molds were investigated. In one of the methods, dental wax sheets /spl sim/1.25 mm thick were punched to get the negative of the desired ceramic structure. The wax molds were infiltrated with a slurry containing a high solids loading of PZT particles. Particle size distribution of the PZT powder was controlled to optimize the slurry viscosity and solids loading. After drying, the molds were burned out, and the PZT structures sintered to high density in a controlled lead atmosphere. Various structures with 1-3 rods ranging in size from 50 to 500-/spl mu/m in diameter, and with shapes inducing diamonds, hexagons, triangles, squares, and cylinders were fabricated. In another method, the mold was developed by bundling of hollow polyester fibers (ID=240-/spl mu/m) and filling them with PZT slurry. The sintered rod structures obtained from either type of molds were backfilled with polymer, polished, electroded and poled. The processing of the piezocomposites and their electromechanical properties will be presented.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"40 1","pages":"551-554 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85554534","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
Phase transformation and phase distribution of pyrochlore structure in Bi/sub 2/O/sub 3/-ZnO-Nb/sub 2/O/sub 5/ system Bi/sub 2/O/sub 3/-ZnO-Nb/sub 2/O/sub 5/体系中焦绿石结构的相变与相分布
ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1996-08-18 DOI: 10.1109/ISAF.1996.598142
W. Hong, W. Xiaoli, Y. Xi
{"title":"Phase transformation and phase distribution of pyrochlore structure in Bi/sub 2/O/sub 3/-ZnO-Nb/sub 2/O/sub 5/ system","authors":"W. Hong, W. Xiaoli, Y. Xi","doi":"10.1109/ISAF.1996.598142","DOIUrl":"https://doi.org/10.1109/ISAF.1996.598142","url":null,"abstract":"Using a quenching technique and powder X-ray diffractometry, the pyrochlore structure has been studied as a function of compositional variations. An isothermal phase diagram at 1000/spl deg/C about the pyrochlore distribution area in the Bi/sub 2/O/sub 3/-ZnO-Nb/sub 2/O/sub 5/ system has been obtained. The transformation mechanism of a cubic pyrochlore (/spl alpha/) to an orthorhombic pyrochlore (/spl beta/) has been discussed.","PeriodicalId":14772,"journal":{"name":"ISAF '96. Proceedings of the Tenth IEEE International Symposium on Applications of Ferroelectrics","volume":"106 1","pages":"787-790 vol.2"},"PeriodicalIF":0.0,"publicationDate":"1996-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85564529","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
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