Sixth IEEE International Symposium on Applications of Ferroelectrics最新文献

{"title":"Sol-Gel Processing of PbZn0.33Nbo.67O3-PbTiO3(PZN-PT) Solid Solutions","authors":"I. Jawed, A. Bailey, A. Ritter, S. Winzer","doi":"10.1109/ISAF.1986.201163","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201163","url":null,"abstract":"","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132576410","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}

{"title":"Titanium-Diffused Lithium Niobate Waveguide Devices","authors":"Niobate Waveguioes","doi":"10.1109/ISAF.1986.201083","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201083","url":null,"abstract":"Optical waveguide devices based upon lithium niobate substrates are presently in an advanced state. A large variety of devices have been demonstrated; fabrication parameters have been optimized by several laboratories; and waveguide devices have shown, for example, improved performance as external modulators in long-distance high-bit-rate systems. In fact, prototype research-grade devices are now commercially available. Lithium niobate has several important charateristics that make it attrative for waveguide devices, in particular its good electro-optic and acousto-optic coefficients. However, equally important is the fact that lithium niobate is readily available commercially in large substrates (7.5 cm wafers). Furthermore it is relatively easily processed and its material properties have been studied and documented extensively.","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130154679","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}

{"title":"Ferroelectric Properties of PVF2Polymer and VF2/C2F2H Copolymers Applications for Shock Gauges and New Transducers","authors":"F. Bauer","doi":"10.1109/ISAF.1986.201195","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201195","url":null,"abstract":"F e r r o e l e c t r i c p r o p e r t i e s o f PVF, polyniers and VF, I C , F, H c o p o l y m e r s a r e p r e s e n t e d . The p o l a r i z a t i o n p r o c e s s o f t h e s e o r g a n i c m a t e r i a l s i n f l u e n c e s t h e p i e z o e l e c t r i c p r o p e r t i e s a n d t h e i r b e h a v i o r u n d e r s h o c k l o a d i n g . Using t h e PWP-pressure wave p r o p a g a t i o n , t h e p o l a r i z a t i o n d i s t r i b u t i o n i n t o p o l y m e r s a n d c o p o l y m e r s i s m e a s u r e d . I t c a n b e o b s e r v e d t h a t t h e homogenei ty i s v e r y good o v e r t h e w h o l e t h i c k n e s s o f t h e s a m p l e s . P r o p e r t i e s o f u n i f o r m p o l e d PVF, and VF,/C, F, H c o p o l y m e r s ,are r e p o r t e d . S h o c k r e s p o n s e s o f t h e s e f e r r o e l e c t r i c o r g a n i c m a t e r i a l s a r e s t u d i e d a n d p r e s e n t e d ( r a n g e 2 200 k b a r ) . C a l i b r a t i o n c u r v e s and s h o c k d a t a s are e x a m i n e d . R e s u l t s o b t a i n e d i n t h e c a s e oE i m p a c t l o a d i n g , i s e n t r o p i c s h o c k c o m p r e s s i o n and e x p l o s i v e l o a d i n g a r e d i s c u s s e d . O r g a n i c polymer and c o p o l y m e r s a r e s t r o n g c a n d i d a t e s f o r s h o c k g a u g e s and new t r a n s d u c e r s .","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128310351","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}

{"title":"Piezoelectpic Properties and Temperature Stability of Poly (Vinylidene Flouride-Triflouroethylene) Copolymers","authors":"G. Stack, E. Ting","doi":"10.1109/ISAF.1986.201205","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201205","url":null,"abstract":"Abstract : Piezoelectric measurements were made on several copolymers of vinylidene fluoride and trifluoroethylene having a vinylidene fluoride concentration in the range of 65 to 75%. The hydrostatic g constant showed only a slight dependence on pressure, and pressures up to 35 MPa caused no apparent loss of the piezoelectric activity. A significant increase in the value of the hydrostatic g constant occurred with an increase in temperature. Anomalous results obtained upon cooling below room temperature may be attributed to the glass transition temperature of the trifluoroethylene comonomer. Temperature aging studies were performed at high temperatures using films of these copolymers. A significant loss of piezoelectric activity occurred after long time exposure. Isothermal studies at various aging temperatures revealed that this decay continued over a long time span. The aging behaviour characteristically followed a linear dependence on the logarithm of aging time. Keywords: Piezoelectric measurements; Vinylidene fluoride copolymers; Temperature stability.","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"149 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121771863","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}

{"title":"Langmuir-Blodgett Films for Nonlinear Optics","authors":"D. Neal, M. C. Petty, G. Roberts, M. H. Ahmad, W. Feast, I. Girling, N. Cade, P. V. Kolinski, I. Peterson","doi":"10.1109/ISAF.1986.201102","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201102","url":null,"abstract":"In recent years there has been considerable interest in media which display significant non-linear optical properties; the telecommunications industry may exploit chin films of such materials for signal processing applications. The Langmuir-Blodgett (LB) technique provides a means of depositing organic layers of a precisely defined thickness. Moreover, by alternating layers of different materials, supermolecular arrays may be fabricated in which there is no centrosymmetry, and therefore the second-order non-linearity of the constituent molecules may be exploited. An investigation of the properties of water-surface monolayers of a number of novel materials with potentially large non-linearities is described. Several of these compounds are shown to form high quality homogeneous or heterogeneous LB films. The optical and electrical properties of the layers are characterized by optical absorption spectroscopy, surface plasmon resonance, and measurements of capacitance, whilst their structure is examined by electron diffraction. Monolayers of a nitrostilbene dye are shown to exhibit: on exceptionally high degree of crystalline order. Data are also given for theoretical calculations of non-linear coefficients and for the relative efficiency of second harmonic generation from bulk samples of various materials. Studies of second harmonic generation from monolayer and alternate multilayer films are reported. Optical non-linearity in an alternating donor-acceptor: inverted donor-acceptor dye system is demonstrated for the first time; the results are analysed in terms of second harmonic surface susceptibilities, and the value of the second-order hyperpolarizability determined for the first bilayer is found to be much superior to that expected by the simple addition of the hyperpolarizabilities of the separate layers. Monolayers containing a mixture of hemicyanine and cadmium arachldate are found to give rise to second harmonic generation which is enhanced relative to that obtained from a pure monolayer of the dye. Corresponding changes in the absorption spectra of the layers can be observed. These findings may have important implications for improving the efficiencies of any non-linear optical device which utilises IB films.","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125985686","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}

{"title":"0-3 Pieoelectric Ceramic-Polymer Composites Prepared by a New Method: Fired Composites","authors":"A. Safari, T. R. Gururaja, C. Hakun, A. Halliyal, R. Newnham","doi":"10.1109/ISAF.1986.201147","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201147","url":null,"abstract":"I n c o m p o s i t e s w i t h 0-3 c o n n e c t i v i t y , a l o a d i n g of m o r e t h a n 6 0 v o l u m e p e r c e n t p i e z o e l e c t r i c f i l l e r i s r e q u i r e d to a c h i e v e u s e f u l p i e z o e l e c t r i c p r o p e r t i e s . A l i m i t a t i o n o f t h e p r e s e n t l y u s e d f a b r i c a t i o n p r o c e d u r e is t h e d i f f i c u l t y i n p r e p a r i n g composi tes w i t h such h igh load ing . A new method of p repa r ing 0-3 composi tes is p r e s e n t e d i n t h i s p a p e r i n w h i c h more t h a n 7 0 Volk f i l l e r p a r t i c l e s can be i n c o r p o r a t e d e a s i l y . C o n v e n t i o n a l a n d c o r o n a d i s c h a r g e p o l i n g t e c h n i q u e s were used t o e l e c t r i c a l l y p o l a r i z e t h e c o m p o s i t e s . D i e l e c t r i c a n d p i e z o e l e c t r i c p r o p e r t i e s o f t h e s e c o m p o s i t e s a r e p r e s e n t e d i n t h i s p a p e r .","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122263742","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}

{"title":"Light-Induced Scattering in Electrooptic Crystals","authors":"R. Rupp, K. Ringhofer, F. Drees, J. Marotz, S. Treichel, E. Kratzig","doi":"10.1109/ISAF.1986.201098","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201098","url":null,"abstract":"","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125225741","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}

{"title":"TSPC/DC Measurements on Barium Titanate","authors":"W. Hubner, H. Anderson","doi":"10.1109/ISAF.1986.201157","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201157","url":null,"abstract":"Thermally-stimlated polarizationldepolar- ization ourrent (TSPCIDC) meamrements were made on high-prity doped and undopod BaTi03 as a function of applied field, heating rate, dopant level, and &:Ti ratio. The form of the TSPCIOC curves is dependent upon both the resistive and ferroeleotric properties of BaTiO3. spectra, current peaks are exhibited due to the change in in magnitude and direction of the spontaneous polarization with changing crystal structure. In particular, whether the phase transition is first or seoond order influsnaes the existence and magnitude of the current peaks.","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127967293","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}

{"title":"Instabilities in PTC Resistors","authors":"B. M. Kulwicki","doi":"10.1109/ISAF.1986.201228","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201228","url":null,"abstract":"","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121088757","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}

{"title":"Use of Composite Materials for a B-Scan Transducer","authors":"W. B. Harrison, J. Greenleaf, J. Ylitalo","doi":"10.1109/ISAF.1986.201130","DOIUrl":"https://doi.org/10.1109/ISAF.1986.201130","url":null,"abstract":"Several types of piezoceramic/polymer composites with 1-3 connectivity are being studied as new ultrasonic biomedical transducers. Their underwater acoustic behavior has been studied at one to five MHz and these data are compared to the thickness mode figure of merit and other properties of composites. One composite disc 41-mm diameter by 1-mm thick was flexible enough to form a concaved spherical cap with a 7.5 cm radius. This transducer had a maxium response at 1.5 MHz and was naturally matched at resonance to the 5 0 ohm impedance of the power supply. The one-half amplitude bandwidth was 1.3 MHz but the time domain signal exhibited some minor energy before and after the main pulse. A new very high sensitivity composite material was also identified for future B-scan transducers.","PeriodicalId":302681,"journal":{"name":"Sixth IEEE International Symposium on Applications of Ferroelectrics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1986-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124590277","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}