基于BSPT和pznt的医用超声成像高频单元件换能器

Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002. Pub Date : 2002-05-28 DOI:10.1109/ISAF.2002.1195932

S. Rhee, S. Zhang, G. Molingou, T. Shrout, K. Shung

{"title":"基于BSPT和pznt的医用超声成像高频单元件换能器","authors":"S. Rhee, S. Zhang, G. Molingou, T. Shrout, K. Shung","doi":"10.1109/ISAF.2002.1195932","DOIUrl":null,"url":null,"abstract":"Ferroelectric single crystals with tetragonal compositions Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/-xPbTiO/sub 3/ (PZNT) and high T/sub C/ (1-x)BiScCo/sub 3/-xPbTiO/sub 3/ (BSPT) were grown by Flux technique, respectively. Dielectric and piezoelectric characterization revealed high thickness coupling coefficients. (k/sub t/ > 60 %) and relatively low dielectric permittivities (/spl epsi//sup s/ < 300) qualifying them as candidates for high frequency (> 20 MHZ) single element transducers. Modeling based on the KLM equivalent circuit was performed resulting in projected bandwidth > 60 % for BSPT and > 70 % for PZNT and therefore high sensitivity. Single element transducers were fabricated with suitable matching and backing layers. For a PZNT transducer with a 35 MHz center frequency, a bandwidth of /spl sim/ 80 % was realized.","PeriodicalId":415725,"journal":{"name":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","volume":"96 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2002-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"BSPT- and PZNT-based high frequency single element transducers for medical ultrasonic imaging\",\"authors\":\"S. Rhee, S. Zhang, G. Molingou, T. Shrout, K. Shung\",\"doi\":\"10.1109/ISAF.2002.1195932\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ferroelectric single crystals with tetragonal compositions Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/-xPbTiO/sub 3/ (PZNT) and high T/sub C/ (1-x)BiScCo/sub 3/-xPbTiO/sub 3/ (BSPT) were grown by Flux technique, respectively. Dielectric and piezoelectric characterization revealed high thickness coupling coefficients. (k/sub t/ > 60 %) and relatively low dielectric permittivities (/spl epsi//sup s/ < 300) qualifying them as candidates for high frequency (> 20 MHZ) single element transducers. Modeling based on the KLM equivalent circuit was performed resulting in projected bandwidth > 60 % for BSPT and > 70 % for PZNT and therefore high sensitivity. Single element transducers were fabricated with suitable matching and backing layers. For a PZNT transducer with a 35 MHz center frequency, a bandwidth of /spl sim/ 80 % was realized.\",\"PeriodicalId\":415725,\"journal\":{\"name\":\"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.\",\"volume\":\"96 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2002-05-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ISAF.2002.1195932\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISAF.2002.1195932","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

摘要

利用Flux技术分别生长出了具有四角形成分Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/-xPbTiO/sub 3/ (PZNT)和高T/sub C/ (1-x)BiScCo/sub 3/-xPbTiO/sub 3/ (BSPT)的铁电单晶。介电和压电特性显示了高厚度耦合系数。(k/sub / > 60%)和相对较低的介电常数(/spl epsi//sup / < 300)使它们成为高频(> 20 MHZ)单元件换能器的候选者。基于KLM等效电路的建模使BSPT的投影带宽> 60%，PZNT的投影带宽> 70%，因此具有高灵敏度。采用合适的匹配层和衬底层制备了单元件换能器。对于中心频率为35mhz的PZNT换能器，实现了/spl sim/ 80%的带宽。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

BSPT- and PZNT-based high frequency single element transducers for medical ultrasonic imaging

Ferroelectric single crystals with tetragonal compositions Pb(Zn/sub 1/3/Nb/sub 2/3/)O/sub 3/-xPbTiO/sub 3/ (PZNT) and high T/sub C/ (1-x)BiScCo/sub 3/-xPbTiO/sub 3/ (BSPT) were grown by Flux technique, respectively. Dielectric and piezoelectric characterization revealed high thickness coupling coefficients. (k/sub t/ > 60 %) and relatively low dielectric permittivities (/spl epsi//sup s/ < 300) qualifying them as candidates for high frequency (> 20 MHZ) single element transducers. Modeling based on the KLM equivalent circuit was performed resulting in projected bandwidth > 60 % for BSPT and > 70 % for PZNT and therefore high sensitivity. Single element transducers were fabricated with suitable matching and backing layers. For a PZNT transducer with a 35 MHz center frequency, a bandwidth of /spl sim/ 80 % was realized.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Proceedings of the 13th IEEE International Symposium on Applications of Ferroelectrics, 2002. ISAF 2002.

自引率

0.00%

发文量