Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195963
J. Santailler, B. Ferrand, Dragan Damjanovic, M. Couchaud, P. Dusserre, M. Budimir, S. Mibord, T. Abad
Today, high crystal quality in sufficient size with high crystal growth yield appears to be a key point for a wide dissemination and use in ferroelectrics applications. So, this paper is related to the growth of PZN-PT solid solution compound like (1-x)(PbZn/sub 1/3/Nb/sub 2/3/O/sub 3/)-xPbTiO/sub 3/ and PMN-PT compound like (1-y)(PbMg/sub 1/3/Nb/sub 2/3/O/sub 3/)-yPbTiO/sub 3/. For these two relaxor ferroelectric single crystals promising properties are obtained near the Morphotropic Phase Boundary (MPB) transition which occurred at values closed to x=0.09 for PZN-PT and y=0.34 for PMN-PT. The complex unit cell phase transition combined with an adequate applied electric field, oriented in the pseudo <001>/sub c/ direction; confer to these single crystals some interesting piezoelectric properties. We present some crystal growth results obtained by the Vertical Gradient Freeze-Solution Growth method (VGF-SG) for PZN-PT and by a pseudo Kyropoulos method developed for PMN-PT. The obtained single crystals, up to 120 g for PZN-PT and 160 g for PMN-PT are then analysed in term of composition and structure. Both PMN-PT and PZN-PT perovskite crystals are rhombohedral (@RT), they show a good global homogeneity. Samples demonstrate ferroelectric behaviour, and after polarisation process, dielectric constants up to 48000 near the Curie temperature (Tc /spl sim/174/spl deg/C @ 1kHz) are obtained for PZN-PT and respectively 74000 for PMN-PT (Tc /spl sim/ 142/spl deg/C @ 100 Hz). The piezoelectric coefficient d/sub 33/ gives values up to /spl sim/2200 pC/N (@RT 9 kV/cm) for PZN-PT and 1700 pC/N(@RT) for PMN-PT. A value up to 94% is measured for the electromechanical coupling coefficient k/sub 33/.
{"title":"Growth and characterisation of piezoelectric PZN-PT 91/9 and PMN-PT 66/34 single crystals for ultrasonic transducers","authors":"J. Santailler, B. Ferrand, Dragan Damjanovic, M. Couchaud, P. Dusserre, M. Budimir, S. Mibord, T. Abad","doi":"10.1109/ISAF.2002.1195963","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195963","url":null,"abstract":"Today, high crystal quality in sufficient size with high crystal growth yield appears to be a key point for a wide dissemination and use in ferroelectrics applications. So, this paper is related to the growth of PZN-PT solid solution compound like (1-x)(PbZn/sub 1/3/Nb/sub 2/3/O/sub 3/)-xPbTiO/sub 3/ and PMN-PT compound like (1-y)(PbMg/sub 1/3/Nb/sub 2/3/O/sub 3/)-yPbTiO/sub 3/. For these two relaxor ferroelectric single crystals promising properties are obtained near the Morphotropic Phase Boundary (MPB) transition which occurred at values closed to x=0.09 for PZN-PT and y=0.34 for PMN-PT. The complex unit cell phase transition combined with an adequate applied electric field, oriented in the pseudo <001>/sub c/ direction; confer to these single crystals some interesting piezoelectric properties. We present some crystal growth results obtained by the Vertical Gradient Freeze-Solution Growth method (VGF-SG) for PZN-PT and by a pseudo Kyropoulos method developed for PMN-PT. The obtained single crystals, up to 120 g for PZN-PT and 160 g for PMN-PT are then analysed in term of composition and structure. Both PMN-PT and PZN-PT perovskite crystals are rhombohedral (@RT), they show a good global homogeneity. Samples demonstrate ferroelectric behaviour, and after polarisation process, dielectric constants up to 48000 near the Curie temperature (Tc /spl sim/174/spl deg/C @ 1kHz) are obtained for PZN-PT and respectively 74000 for PMN-PT (Tc /spl sim/ 142/spl deg/C @ 100 Hz). The piezoelectric coefficient d/sub 33/ gives values up to /spl sim/2200 pC/N (@RT 9 kV/cm) for PZN-PT and 1700 pC/N(@RT) for PMN-PT. A value up to 94% is measured for the electromechanical coupling coefficient k/sub 33/.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114415452","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195970
Jia Zhou, Po Li, Song Zhang, Feng Zhou, Yipin Huang, Pengyuan Yang, M. Bao
A, novel MEMS gas sensor including a PZT thin film layer and a zeolite layer is developed in this paper, which shows effective combination of high sensitivity and high selectivity. Working in resonating mode, the sensor depicts the mass loading due to molecular adsorption of the zeolite by the frequency shift. The relationship between the frequency shift in percent and the concentration of Freon is linear. The minimum mass loading of 3.5 /spl times/ 10/sup -9/ and the sensitivity of -0.0024%/ppm can be determined from the experimental results.
{"title":"A novel MEMS gas sensor with effective combination of high sensitivity and high selectivity","authors":"Jia Zhou, Po Li, Song Zhang, Feng Zhou, Yipin Huang, Pengyuan Yang, M. Bao","doi":"10.1109/ISAF.2002.1195970","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195970","url":null,"abstract":"A, novel MEMS gas sensor including a PZT thin film layer and a zeolite layer is developed in this paper, which shows effective combination of high sensitivity and high selectivity. Working in resonating mode, the sensor depicts the mass loading due to molecular adsorption of the zeolite by the frequency shift. The relationship between the frequency shift in percent and the concentration of Freon is linear. The minimum mass loading of 3.5 /spl times/ 10/sup -9/ and the sensitivity of -0.0024%/ppm can be determined from the experimental results.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"52 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114132513","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195926
Y. Tajitsu
Using new techniques, we fabricated two kinds of piezoelectric films, polyurea-5 and poly-L-lactic acid (PLLA) films, in order to investigate their optical properties, of which the higher order structures are simple. Our main findings are as follows. In the case of the PLLA film fabricated by the new technique, giant optical rotatory power and high-speed light modulation exists. On the other hand, in the case of the polyurea-5 film prepared by vapor deposition polymerization, the Pockels coefficient of 0.09 pm/V is obtained. This value is fairly large for polymers.
{"title":"Light modulation properties of novel piezoelectric polymers","authors":"Y. Tajitsu","doi":"10.1109/ISAF.2002.1195926","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195926","url":null,"abstract":"Using new techniques, we fabricated two kinds of piezoelectric films, polyurea-5 and poly-L-lactic acid (PLLA) films, in order to investigate their optical properties, of which the higher order structures are simple. Our main findings are as follows. In the case of the PLLA film fabricated by the new technique, giant optical rotatory power and high-speed light modulation exists. On the other hand, in the case of the polyurea-5 film prepared by vapor deposition polymerization, the Pockels coefficient of 0.09 pm/V is obtained. This value is fairly large for polymers.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114213987","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195879
Y. Masuda, K. Kakimoto, H. Kakemoto, K. Watanabe
PZT thin films are promising materials for ferroelectric random access memory (FeRAM) and micro electro-mechanical system (MEMS). For these applications, it is important to clarify the relationship between the motion of ferroelectric domains and their piezoelectric properties. Nanometer-size structure of polarized domains and grains for PLD-derived PZT thin film was investigated by AFM and KFM, when dc voltage was applied to the film through a conductive tip. Topographic and piezoelectric domain images in the film surface clearly showed switchable domains with 100 nm in size.
{"title":"Domains and piezo-image of PZT family thin films","authors":"Y. Masuda, K. Kakimoto, H. Kakemoto, K. Watanabe","doi":"10.1109/ISAF.2002.1195879","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195879","url":null,"abstract":"PZT thin films are promising materials for ferroelectric random access memory (FeRAM) and micro electro-mechanical system (MEMS). For these applications, it is important to clarify the relationship between the motion of ferroelectric domains and their piezoelectric properties. Nanometer-size structure of polarized domains and grains for PLD-derived PZT thin film was investigated by AFM and KFM, when dc voltage was applied to the film through a conductive tip. Topographic and piezoelectric domain images in the film surface clearly showed switchable domains with 100 nm in size.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126860777","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195945
S. Hwang, J. Yoo, L. Hwang, J. Hong, S. R. Ryu, S.I. Lee, M.S. Lee
In this study, the structural, dielectric and piezoelectric properties of Pb[(Ni/sub 1/3/Nb/sub 2/3/)/sub x/ - (Mn/sub 1/3/Nb/sub 2/3/)/sub 0.09-x/ (Zr/sub 0.505/Ti/sub 0.495/)/sub 0.91/]O/sub 3/ (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05) system ceramics were investigated to develop the composition for piezoelectric transformers. All the specimens were sintered at 1250/spl deg/C and their physical properties were measured, and the results are as follows; With increasing PNN substitution for PMN-PZT system, the dielectric constant was increased and the electro-mechanical coupling factor (kp) was increased to 0.62 at 5 mol% while the mechanical quality factor (Qm) decreased.
{"title":"Piezoelectric and dielectric properties of Pb(Ni/sub 1/3/Nb/sub 2/3/)O/sub 3/ -Pb(Mn/sub 1/3/Nb/sub 2/3/)O/sub 3/-Pb(Zr,Ti)O/sub 3/ ceramics for piezoelectric transformer","authors":"S. Hwang, J. Yoo, L. Hwang, J. Hong, S. R. Ryu, S.I. Lee, M.S. Lee","doi":"10.1109/ISAF.2002.1195945","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195945","url":null,"abstract":"In this study, the structural, dielectric and piezoelectric properties of Pb[(Ni/sub 1/3/Nb/sub 2/3/)/sub x/ - (Mn/sub 1/3/Nb/sub 2/3/)/sub 0.09-x/ (Zr/sub 0.505/Ti/sub 0.495/)/sub 0.91/]O/sub 3/ (x = 0, 0.01, 0.02, 0.03, 0.04, 0.05) system ceramics were investigated to develop the composition for piezoelectric transformers. All the specimens were sintered at 1250/spl deg/C and their physical properties were measured, and the results are as follows; With increasing PNN substitution for PMN-PZT system, the dielectric constant was increased and the electro-mechanical coupling factor (kp) was increased to 0.62 at 5 mol% while the mechanical quality factor (Qm) decreased.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128018984","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195917
R. Chen, Xiao-hui Wang, Longtu Li, Z. Gui
The search for dielectric materials with a high dielectric constant and /spl epsiv/ curves with a flat profile is still ongoing. K/sub 2/Sr/sub 4/Nb/sub 10/O/sub 30/-based dielectric ceramics, having the tetragonal tungsten bronze structure (TTB), which display a high permittivity and flat /spl epsiv/ curves meeting the X7R specification. BaTiO/sub 3/-based ferroelectric ceramics are classic dielectric materials for ceramic capacitors. Results were obtained by mixing compounds with closely related structures, such as the tetragonal tungsten bronze (TTB) niobate K/sub 2/Sr/sub 4/Nb/sub 10/O/sub 30/ (KSN) and the perovskite BaTiO/sub 3/ (BT). Phase compositions were analyzed by using XRD and the microstructure was investigated by SEM. The present study explores the dielectric curves /spl epsiv/ of the composition (K/sub 2/Sr/sub 4/Nb/sub 10/O/sub 30/)/sub x//spl middot/(BaTiO/sub 3/)/sub 1-x/ with x = 0.1-0.9 where x means the weight ratio of KSN. The dielectric constant at room temperature is lowest at x = 0.4. When x is between 0.4 and 0.7, /spl epsiv/ curves of the ceramic composites present a linear decrease with the temperature. Two different phases, TTB and perovskite type, are present after sintering.
{"title":"Microstructural and dielectric properties of ceramics based on K/sub 2/Sr/sub 4/Nb/sub 10/O/sub 30/ and BaTiO/sub 3/","authors":"R. Chen, Xiao-hui Wang, Longtu Li, Z. Gui","doi":"10.1109/ISAF.2002.1195917","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195917","url":null,"abstract":"The search for dielectric materials with a high dielectric constant and /spl epsiv/ curves with a flat profile is still ongoing. K/sub 2/Sr/sub 4/Nb/sub 10/O/sub 30/-based dielectric ceramics, having the tetragonal tungsten bronze structure (TTB), which display a high permittivity and flat /spl epsiv/ curves meeting the X7R specification. BaTiO/sub 3/-based ferroelectric ceramics are classic dielectric materials for ceramic capacitors. Results were obtained by mixing compounds with closely related structures, such as the tetragonal tungsten bronze (TTB) niobate K/sub 2/Sr/sub 4/Nb/sub 10/O/sub 30/ (KSN) and the perovskite BaTiO/sub 3/ (BT). Phase compositions were analyzed by using XRD and the microstructure was investigated by SEM. The present study explores the dielectric curves /spl epsiv/ of the composition (K/sub 2/Sr/sub 4/Nb/sub 10/O/sub 30/)/sub x//spl middot/(BaTiO/sub 3/)/sub 1-x/ with x = 0.1-0.9 where x means the weight ratio of KSN. The dielectric constant at room temperature is lowest at x = 0.4. When x is between 0.4 and 0.7, /spl epsiv/ curves of the ceramic composites present a linear decrease with the temperature. Two different phases, TTB and perovskite type, are present after sintering.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128458523","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195869
Chude Feng, Yi Yang, Youhua Yu
This work is based on PMN system. The influences of different dopants (Li/sup +/, Sr/sup 2+/, Y/sup 3+/) on diffuse dielectric properties and micro-structure were studied. HREM, SAED, Raman spectra and XPS were used to study small changes of ordering degree of PMN systems. The research proved that diffuse phase transition (DPT) is caused by the formation of ordered structure at B site (Mg/sup 2+/:Nb/sup 5+/=1:1). The degree of DPT can be contrasted from dielectric properties, and has direct relation with ordering degree of microstructure. It also showed when doping with element of one valence (Li/sup +/), the ordering degree of PMN lowered; when doping with Sr/sup 2+/ and Y/sup 3+/, the ordering degree enhanced to different extent.
{"title":"The effect of different dopants on diffuse phase transition and ordering degree in PMN","authors":"Chude Feng, Yi Yang, Youhua Yu","doi":"10.1109/ISAF.2002.1195869","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195869","url":null,"abstract":"This work is based on PMN system. The influences of different dopants (Li/sup +/, Sr/sup 2+/, Y/sup 3+/) on diffuse dielectric properties and micro-structure were studied. HREM, SAED, Raman spectra and XPS were used to study small changes of ordering degree of PMN systems. The research proved that diffuse phase transition (DPT) is caused by the formation of ordered structure at B site (Mg/sup 2+/:Nb/sup 5+/=1:1). The degree of DPT can be contrasted from dielectric properties, and has direct relation with ordering degree of microstructure. It also showed when doping with element of one valence (Li/sup +/), the ordering degree of PMN lowered; when doping with Sr/sup 2+/ and Y/sup 3+/, the ordering degree enhanced to different extent.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125113591","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195921
P. Bao, F. Yan, W. Li, Y. Dai, H. Shen, J. Zhu, H. Chan, C. Choy, Y.N. Wang
The dielectric properties, internal friction and Young's modulus of (1-x%) Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-x%PbTiO/sub 3/ (for x=13,23,33) ceramics have been measured. A phase-transition like internal friction peak associated with Young's modulus softening has been observed at temperature T/sub R-F/, which can be attributed to the Relaxor to Ferroelectrics (R-F) phase transition. Therefore, the R-F phase transition can be explained in terms of the paraelectric to ferroelectric phase transition of paraelectric matrix in the materials. The softening of Young's modulus corresponding to the appearance of polar nano-domains is also found at the temperature far above T/sub m/.
{"title":"Internal friction and Young's modulus of titanium-doped lead magnesium niobate","authors":"P. Bao, F. Yan, W. Li, Y. Dai, H. Shen, J. Zhu, H. Chan, C. Choy, Y.N. Wang","doi":"10.1109/ISAF.2002.1195921","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195921","url":null,"abstract":"The dielectric properties, internal friction and Young's modulus of (1-x%) Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-x%PbTiO/sub 3/ (for x=13,23,33) ceramics have been measured. A phase-transition like internal friction peak associated with Young's modulus softening has been observed at temperature T/sub R-F/, which can be attributed to the Relaxor to Ferroelectrics (R-F) phase transition. Therefore, the R-F phase transition can be explained in terms of the paraelectric to ferroelectric phase transition of paraelectric matrix in the materials. The softening of Young's modulus corresponding to the appearance of polar nano-domains is also found at the temperature far above T/sub m/.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121779589","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195941
K. Snook, T. Shrout, K. Shung
An annular array with equal area elements has been fabricated and tested. The elements are made from a novel fine-grain lead titanate which was micromachined using a laser to form the kerfs. Resonance methods showed the lead titanate exhibited electromechanical properties similar to bulk materials, including a thickness coupling k/sub t/ of 0.49 and low permittivity (/spl epsiv//sub 33//sup S///spl epsiv//sub 0/=178). An average center frequency of 53 MHz with 40% bandwidth was obtained across all the elements. Crosstalk levels were below -20 dB in water. Good agreement was obtained between the measured results and a finite element model.
{"title":"Design of a 50 MHz annular array using fine-grain lead titanate","authors":"K. Snook, T. Shrout, K. Shung","doi":"10.1109/ISAF.2002.1195941","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195941","url":null,"abstract":"An annular array with equal area elements has been fabricated and tested. The elements are made from a novel fine-grain lead titanate which was micromachined using a laser to form the kerfs. Resonance methods showed the lead titanate exhibited electromechanical properties similar to bulk materials, including a thickness coupling k/sub t/ of 0.49 and low permittivity (/spl epsiv//sub 33//sup S///spl epsiv//sub 0/=178). An average center frequency of 53 MHz with 40% bandwidth was obtained across all the elements. Crosstalk levels were below -20 dB in water. Good agreement was obtained between the measured results and a finite element model.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122080686","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}
Pub Date : 2002-05-28DOI: 10.1109/ISAF.2002.1195919
Y. Yamashita, Y. Hosono
Sintering and dielectric properties of a new perovskite compounds, Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 1-x/Zr/sub x/]O/sub 3/ (x=0, 0.25, 0.5 and 0.75) ceramics, under an oxygen atmosphere sintering condition have been studied. The Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 1-x/Zr/sub x/]O/sub 3/ ceramics system can be fired at lower than 950/spl deg/C. Perovskite phases are not confirmed in the Pb(Mg/sub 1/3/V/sub 2/3/)O/sub 3/ and Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 0.75/Zr/sub 0.25/]O/sub 3/ ceramics. Pure perovskite phase ceramics are obtained with a Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 0.25/Zr/sub 0.75/]O/sub 3/ composition. Dielectric constant and dissipation factors of the Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 0.25/Zr/sub 0.75/]O/sub 3/ sample at 100 KHz are 187 and 2.2% at 25/spl deg/C. Curie temperature (Tc) of the Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 0.25/Zr/sub 0.75/]O/sub 3/ ceramics is 202/spl deg/C which is lower than that of pure PbZrO/sub 3/.
{"title":"Dielectric properties of Pb(Mg/sub 1/3/V/sub 2/3/)O/sub 3/-PbZrO/sub 3/ ceramics","authors":"Y. Yamashita, Y. Hosono","doi":"10.1109/ISAF.2002.1195919","DOIUrl":"https://doi.org/10.1109/ISAF.2002.1195919","url":null,"abstract":"Sintering and dielectric properties of a new perovskite compounds, Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 1-x/Zr/sub x/]O/sub 3/ (x=0, 0.25, 0.5 and 0.75) ceramics, under an oxygen atmosphere sintering condition have been studied. The Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 1-x/Zr/sub x/]O/sub 3/ ceramics system can be fired at lower than 950/spl deg/C. Perovskite phases are not confirmed in the Pb(Mg/sub 1/3/V/sub 2/3/)O/sub 3/ and Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 0.75/Zr/sub 0.25/]O/sub 3/ ceramics. Pure perovskite phase ceramics are obtained with a Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 0.25/Zr/sub 0.75/]O/sub 3/ composition. Dielectric constant and dissipation factors of the Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 0.25/Zr/sub 0.75/]O/sub 3/ sample at 100 KHz are 187 and 2.2% at 25/spl deg/C. Curie temperature (Tc) of the Pb[(Mg/sub 1/3/V/sub 2/3/)/sub 0.25/Zr/sub 0.75/]O/sub 3/ ceramics is 202/spl deg/C which is lower than that of pure PbZrO/sub 3/.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122187174","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}
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