首页 > 最新文献

2008 17th IEEE International Symposium on the Applications of Ferroelectrics最新文献

英文 中文
Textured processing, reactive templated grain growth, and electrical property relationships for sodium bismuth titanate PI015 钛酸铋钠PI015的织构加工、活性模板晶粒生长和电性能关系
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693814
C. Diantonio, M. Winter, M. Rodriguez, P. Yang, G. Burns, T. Chavez, A. Blea
The investigation of lead-free piezoelectric ceramic compositions has recently gained an increased level of interest due to the efforts to reduce lead based components. The most widely used piezoelectric/ferroelectric ceramic material today, including specialized ceramics for military applications (ex. sonar), consists of PbTiO3-PbZrO3 (i.e. PZT-system). It has become imperative to integrate a processing strategy with a lead-free ferroelectric material capable of competing with or surpassing the properties of lead-based compositions. This work examines the development of optimal processing parameters through texturing and reactive templated grain growth to selectively engineer a polycrystalline ceramic microstructure. It presents how these parameters can affect the electro-mechanical properties for a sodium bismuth titanate based composition. The final properties for all ceramic materials are highly influenced by the processing steps and forming techniques used to construct the bulk ceramic component. Texturally modified ceramic compositions have recently exhibited enhanced properties that, depending on the system, match and even surpass those of an optimum modified lead-based composition. In this work we report on the development and use of a texture induced forming process combined with reactive templated grain growth to produce grain-oriented polycrystalline bulk ceramics. Thermal analysis, x-ray diffraction characterization, microstructure stereology and the dielectric and electromechanical performance will be presented. A processing space has been characterized and mapped in order to drive towards achieving maximized electrical performance for this lead-free system.
由于努力减少含铅成分,无铅压电陶瓷成分的研究最近获得了越来越多的兴趣。目前使用最广泛的压电/铁电陶瓷材料,包括用于军事应用的专用陶瓷(例如声纳),由PbTiO3-PbZrO3(即pzt系统)组成。集成一种能够与铅基组合物的性能相竞争或超越的无铅铁电材料的加工策略已成为当务之急。这项工作考察了通过织构和反应模板晶粒生长来选择性地设计多晶陶瓷微观结构的最佳加工参数的发展。介绍了这些参数如何影响钛酸铋钠基组合物的机电性能。所有陶瓷材料的最终性能都受到用于构建大块陶瓷部件的加工步骤和成型技术的高度影响。结构改性陶瓷组合物最近表现出增强的性能,这取决于系统,匹配甚至超过了最佳改性铅基组合物。在这项工作中,我们报告了织构诱导成形工艺与反应模板晶粒生长相结合的发展和使用,以生产晶粒取向的多晶体陶瓷。将介绍热分析、x射线衍射表征、微观结构立体学以及介电和机电性能。加工空间的特征和映射,以推动实现最大的电气性能,这一无铅系统。
{"title":"Textured processing, reactive templated grain growth, and electrical property relationships for sodium bismuth titanate PI015","authors":"C. Diantonio, M. Winter, M. Rodriguez, P. Yang, G. Burns, T. Chavez, A. Blea","doi":"10.1109/ISAF.2008.4693814","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693814","url":null,"abstract":"The investigation of lead-free piezoelectric ceramic compositions has recently gained an increased level of interest due to the efforts to reduce lead based components. The most widely used piezoelectric/ferroelectric ceramic material today, including specialized ceramics for military applications (ex. sonar), consists of PbTiO3-PbZrO3 (i.e. PZT-system). It has become imperative to integrate a processing strategy with a lead-free ferroelectric material capable of competing with or surpassing the properties of lead-based compositions. This work examines the development of optimal processing parameters through texturing and reactive templated grain growth to selectively engineer a polycrystalline ceramic microstructure. It presents how these parameters can affect the electro-mechanical properties for a sodium bismuth titanate based composition. The final properties for all ceramic materials are highly influenced by the processing steps and forming techniques used to construct the bulk ceramic component. Texturally modified ceramic compositions have recently exhibited enhanced properties that, depending on the system, match and even surpass those of an optimum modified lead-based composition. In this work we report on the development and use of a texture induced forming process combined with reactive templated grain growth to produce grain-oriented polycrystalline bulk ceramics. Thermal analysis, x-ray diffraction characterization, microstructure stereology and the dielectric and electromechanical performance will be presented. A processing space has been characterized and mapped in order to drive towards achieving maximized electrical performance for this lead-free system.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123684848","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
High Speed Piezo Force Microscopy: Nanoscale and nanosecond direct observations of domain switching 高速压电力显微镜:纳米级和纳秒级的畴切换直接观察
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693907
R. Nath, N. Polomoff, J. Bosse, Y. Chu, R. Ramesh, B. Huey
High Speed Piezo Force Microscopy (HSPFM) is a new variation of Atomic Force Miroscopy (AFM) for direct nanoscale measurements of domain switching dynamics. Image acquisition is accelerated from several minutes for standard piezo force microscopy to as fast as a fraction of a second for HSPFM. Movies of consecutive images during in-situ domain switching therefore allow high spatial and temporal resolution, with less than 500 nanosecond poling per pixel achieved. The influence of individual defects on domain nucleation, growth mechanisms, switching speed, and switching energy are therefore uniquely apparent.
高速压电力显微镜(HSPFM)是原子力显微镜(AFM)的一种新的变化,用于直接测量纳米尺度的畴切换动力学。图像采集从标准压电力显微镜的几分钟加速到HSPFM的几分之一秒。因此,在原位域切换期间,连续图像的电影允许高空间和时间分辨率,每像素实现不到500纳秒的极化。因此,单个缺陷对畴形核、生长机制、开关速度和开关能量的影响是唯一明显的。
{"title":"High Speed Piezo Force Microscopy: Nanoscale and nanosecond direct observations of domain switching","authors":"R. Nath, N. Polomoff, J. Bosse, Y. Chu, R. Ramesh, B. Huey","doi":"10.1109/ISAF.2008.4693907","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693907","url":null,"abstract":"High Speed Piezo Force Microscopy (HSPFM) is a new variation of Atomic Force Miroscopy (AFM) for direct nanoscale measurements of domain switching dynamics. Image acquisition is accelerated from several minutes for standard piezo force microscopy to as fast as a fraction of a second for HSPFM. Movies of consecutive images during in-situ domain switching therefore allow high spatial and temporal resolution, with less than 500 nanosecond poling per pixel achieved. The influence of individual defects on domain nucleation, growth mechanisms, switching speed, and switching energy are therefore uniquely apparent.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127952858","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
Fabrication of ferroelectric optical nanocomposite thick films by aerosol deposition method 气溶胶沉积法制备铁电光学纳米复合材料厚膜
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693829
Jaehyuk Park, J. Akedo
We demonstrate a fabrication of ferroelectric optical nanocomposite thick films by aerosol deposition method (ADM) and report their highly enhanced optical and electrical characteristics. Nanocomposite gold / PZT 3-¿m-thick films acquired the enhanced surface plasmon resonance at a wavelength of 640 nm as well as the enhanced electrical properties. The strength and the position of surface plasmon resonance at the nanocomposite films deposited by ADM could be controlled by adjusting the concentration and the shape of nanogold in the host matrix.
我们展示了用气溶胶沉积法(ADM)制备铁电光学纳米复合材料厚膜,并报告了其高度增强的光学和电学特性。纳米复合金/ PZT 3-¿m厚度薄膜在640 nm波长处获得了增强的表面等离子体共振和增强的电学性能。通过调节基质中纳米金的浓度和形状,可以控制ADM沉积纳米复合膜表面等离子体共振的强度和位置。
{"title":"Fabrication of ferroelectric optical nanocomposite thick films by aerosol deposition method","authors":"Jaehyuk Park, J. Akedo","doi":"10.1109/ISAF.2008.4693829","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693829","url":null,"abstract":"We demonstrate a fabrication of ferroelectric optical nanocomposite thick films by aerosol deposition method (ADM) and report their highly enhanced optical and electrical characteristics. Nanocomposite gold / PZT 3-¿m-thick films acquired the enhanced surface plasmon resonance at a wavelength of 640 nm as well as the enhanced electrical properties. The strength and the position of surface plasmon resonance at the nanocomposite films deposited by ADM could be controlled by adjusting the concentration and the shape of nanogold in the host matrix.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129406608","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
HP007 modeling permittivity and conductivity contrast on electric energy storage properties of dielectric composites HP007模型对介电复合材料储能性能的介电常数和电导率对比
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693737
Xuhui Lu, R. W. Schwartz, W. Huebner
The electric field distribution, field and power density enhancement factors, power loss and stored electric energy in dielectric composites were calculated using the boundary-element method (BEM). The composites consist of a low permittivity host containing either spherical conducting inclusions having dielectric coating shells, or dielectrically or conductively graded spherical dielectric particles. It is shown that the local electric field and power density enhancement effects diminish as the thickness of shells, the number of grading layers or the degree of nonlinearity of grading increases. The reduced enhancement effects significantly increase the normalized stored electric energy due to the fact that with a reduced enhancement factor a higher voltage can be applied. Frequency effects for composites with conductivity-graded particles were also considered. The results of these studies have implications for the design of high energy density dielectric composites.
采用边界元法(BEM)计算了介质复合材料的电场分布、场密度和功率密度增强因子、功率损耗和存储电能。所述复合材料由含有具有介电涂层外壳的球形导电内含物或介电或导电梯度球形介电颗粒的低介电常数主体组成。结果表明,局域电场和功率密度增强效应随壳层厚度、分级层数和分级非线性程度的增加而减小。减小的增强效应显著地增加了归一化存储的电能,这是因为减小的增强因子可以施加更高的电压。同时考虑了电导率梯度颗粒复合材料的频率效应。这些研究结果对高能量密度介电复合材料的设计具有指导意义。
{"title":"HP007 modeling permittivity and conductivity contrast on electric energy storage properties of dielectric composites","authors":"Xuhui Lu, R. W. Schwartz, W. Huebner","doi":"10.1109/ISAF.2008.4693737","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693737","url":null,"abstract":"The electric field distribution, field and power density enhancement factors, power loss and stored electric energy in dielectric composites were calculated using the boundary-element method (BEM). The composites consist of a low permittivity host containing either spherical conducting inclusions having dielectric coating shells, or dielectrically or conductively graded spherical dielectric particles. It is shown that the local electric field and power density enhancement effects diminish as the thickness of shells, the number of grading layers or the degree of nonlinearity of grading increases. The reduced enhancement effects significantly increase the normalized stored electric energy due to the fact that with a reduced enhancement factor a higher voltage can be applied. Frequency effects for composites with conductivity-graded particles were also considered. The results of these studies have implications for the design of high energy density dielectric composites.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129864434","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
Dielectric behavior in the BiScO3-BaTiO3-(K1/2Bi1/2)TiO3 ternary system BiScO3-BaTiO3-(K1/2Bi1/2)TiO3三元体系的介电行为
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693888
J. B. Lim, S. Zhang, N. Kim, T. Shrout
(1¿x)[0.4BiScO3¿0.6BaTiO3] + x (K1/2Bi1/2)TiO3 [BSBT-KBTx] ceramics in the perovskite solid solution system were studied for potential high temperature capacitor applications. The diectric properties of BSBT-KBTx ceramics were investigated as a function temperature and frequency. The BSBT-KBTx ceramics showed high dielectric permittivity (> 1000 @RT) and low dielectric loss over the temperature range from 100 ~ 300°C with a flat temperature coefficient (TCC). In addition, BSBT-KBTx ceramics were observed to possess a dielectric relaxation at temperatures (> 300 K). Polarization measurements as a function of electric field showed high energy storage densities with 1.8 J/cm3 at 120 kV/cm. Therefore, dielectrics in this novel ternary system appear to be promising candidates for high temperature and energy storage capacitors.
研究了钙钛矿固溶体体系中(1¿x)[0.4BiScO3¿0.6BaTiO3] + x (K1/2Bi1/2)TiO3 [BSBT-KBTx]陶瓷在高温电容器中的潜在应用。研究了BSBT-KBTx陶瓷的介电性能随温度和频率的变化规律。BSBT-KBTx陶瓷在100 ~ 300℃范围内具有较高的介电常数(> 1000 @RT)和较低的介电损耗,温度系数(TCC)较平坦。此外,BSBT-KBTx陶瓷在温度> 300 K时具有介电弛豫,极化测量结果显示,在120 kV/cm时,BSBT-KBTx陶瓷具有1.8 J/cm3的高储能密度。因此,这种新型三元体系中的介电材料似乎是高温和储能电容器的有希望的候选者。
{"title":"Dielectric behavior in the BiScO3-BaTiO3-(K1/2Bi1/2)TiO3 ternary system","authors":"J. B. Lim, S. Zhang, N. Kim, T. Shrout","doi":"10.1109/ISAF.2008.4693888","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693888","url":null,"abstract":"(1¿x)[0.4BiScO3¿0.6BaTiO3] + x (K1/2Bi1/2)TiO3 [BSBT-KBTx] ceramics in the perovskite solid solution system were studied for potential high temperature capacitor applications. The diectric properties of BSBT-KBTx ceramics were investigated as a function temperature and frequency. The BSBT-KBTx ceramics showed high dielectric permittivity (> 1000 @RT) and low dielectric loss over the temperature range from 100 ~ 300°C with a flat temperature coefficient (TCC). In addition, BSBT-KBTx ceramics were observed to possess a dielectric relaxation at temperatures (> 300 K). Polarization measurements as a function of electric field showed high energy storage densities with 1.8 J/cm3 at 120 kV/cm. Therefore, dielectrics in this novel ternary system appear to be promising candidates for high temperature and energy storage capacitors.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128080838","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
Structural, dielectric, electric, and ferroelectric properties of different routes derived of Ba1-xSrxTiO3 (BSTO) ceramic Ba1-xSrxTiO3 (BSTO)陶瓷的结构、介电、电学和铁电性能
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693900
R. M. Valdes, R. Palai, R. Katiyar
Ba1-xSr3TiO3 (BSTO) is a suitable material for microelectronic device applications due to its high response of the dielectric permittivity an applied electric filed. We have investigated crystal structure, dielectric response, electrical conduction and ferroelectric properties of BSTO. Sol gel and solid state processing were used as routes for the synthesis of BSTO ceramics. The microstructures including grain size and phase analysis have been examined using SEM, X-ray diffraction, and Raman Spectroscopy. The chemical characterization was measured by EDS. From the temperature dependence of measured relative permittivity, loss tangent and, tunability at frequencies between 1 KHz to 1 MHz, the ferroelectric phase transition of BSTO-sg (x=0.4) was observed in ~ 238K, BST-ss (x=0.4) in 267K, and BST-sg & BST-ss (x=0.3) were observed both in ~312K.
Ba1-xSr3TiO3 (BSTO)由于其对外加电场的高介电常数响应而成为微电子器件应用的合适材料。我们研究了BSTO的晶体结构、介电响应、电导率和铁电性能。采用溶胶-凝胶法和固相法制备了BSTO陶瓷。利用扫描电镜、x射线衍射和拉曼光谱分析了其微观结构,包括晶粒尺寸和物相分析。用能谱仪测定了其化学性质。从测量的相对介电常数、损耗正切和1 KHz ~ 1 MHz频率可调性的温度依赖性来看,在~ 238K下观察到BSTO-sg (x=0.4)的铁电相变,在267K下观察到BST-ss (x=0.4)的铁电相变,在~312K下观察到BST-sg和BST-ss (x=0.3)的铁电相变。
{"title":"Structural, dielectric, electric, and ferroelectric properties of different routes derived of Ba1-xSrxTiO3 (BSTO) ceramic","authors":"R. M. Valdes, R. Palai, R. Katiyar","doi":"10.1109/ISAF.2008.4693900","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693900","url":null,"abstract":"Ba1-xSr3TiO3 (BSTO) is a suitable material for microelectronic device applications due to its high response of the dielectric permittivity an applied electric filed. We have investigated crystal structure, dielectric response, electrical conduction and ferroelectric properties of BSTO. Sol gel and solid state processing were used as routes for the synthesis of BSTO ceramics. The microstructures including grain size and phase analysis have been examined using SEM, X-ray diffraction, and Raman Spectroscopy. The chemical characterization was measured by EDS. From the temperature dependence of measured relative permittivity, loss tangent and, tunability at frequencies between 1 KHz to 1 MHz, the ferroelectric phase transition of BSTO-sg (x=0.4) was observed in ~ 238K, BST-ss (x=0.4) in 267K, and BST-sg & BST-ss (x=0.3) were observed both in ~312K.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122949829","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
MI007: Galvanic piezoelectric RF MEMS switches MI007:电压电射频MEMS开关
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693747
O. Wunnicke, M. Klee, K. Reimann, C. Renders, H. van Esch, W. Keur, J. Zhao, M. de Wild, A. Roest
Galvanic piezoelectric RF MEMS switches are presented. The switches are completely processed and characterized mechanically and electrically. The mechanic deformation and switching times are discussed. Closing of the switch can be achieved within less than 10 ¿s. Electrical measurements yield contact resistances in the order of 50 ¿ and isolation resistance of more than 1 G¿.
介绍了电压电式射频MEMS开关。这些开关经过了完全的加工,并具有机械和电气特性。讨论了机械变形和开关时间。开关的关闭可以在不到10秒的时间内完成。电气测量产生的接触电阻约为50°c,隔离电阻大于1°c。
{"title":"MI007: Galvanic piezoelectric RF MEMS switches","authors":"O. Wunnicke, M. Klee, K. Reimann, C. Renders, H. van Esch, W. Keur, J. Zhao, M. de Wild, A. Roest","doi":"10.1109/ISAF.2008.4693747","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693747","url":null,"abstract":"Galvanic piezoelectric RF MEMS switches are presented. The switches are completely processed and characterized mechanically and electrically. The mechanic deformation and switching times are discussed. Closing of the switch can be achieved within less than 10 ¿s. Electrical measurements yield contact resistances in the order of 50 ¿ and isolation resistance of more than 1 G¿.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131504084","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
Enhancement of the giant electromechanical response in relaxor ferroelectrics due to the critical point proximity 临界点接近对弛豫铁电体巨大机电响应的增强
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693769
Z. Kutnjak, R. Blinc
I The dielectric, heat capacity, and piezoelectric investigations of PMN-PT crystals show the existence of a line of critical points for the paraelectric to ferroelectric transformations in the composition-temperature-electric field (x-T-E) phase diagram. On approaching the critical point both the enthalpy cost to induce the intermediate monoclinic states and thus the barier for polarization rotations decrease significantly.
PMN-PT晶体的介电、热容量和压电研究表明,在成分-温度-电场(x-T-E)相图中,存在一条从准电到铁电转变的临界点线。在接近临界点时,诱导中间单斜态的焓代价和极化旋转势垒都显著降低。
{"title":"Enhancement of the giant electromechanical response in relaxor ferroelectrics due to the critical point proximity","authors":"Z. Kutnjak, R. Blinc","doi":"10.1109/ISAF.2008.4693769","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693769","url":null,"abstract":"I The dielectric, heat capacity, and piezoelectric investigations of PMN-PT crystals show the existence of a line of critical points for the paraelectric to ferroelectric transformations in the composition-temperature-electric field (x-T-E) phase diagram. On approaching the critical point both the enthalpy cost to induce the intermediate monoclinic states and thus the barier for polarization rotations decrease significantly.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133013245","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
Ceramic dielectric materials for microwave resonator arrays 微波谐振器阵列用陶瓷介电材料
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693749
M. Lanagan, K. Rajab, Duck-Ki Kwon, G. Semouchkin, E. Semouchkina, M. Iwasaki
Integrated high frequency devices require high permittivity dielectric materials with low loss as well as low sintering temperatures. Ceramics with higher permittivity (50<¿r<350) than conventional low temperature co-fired ceramics (5 < ¿r < 10) will drive further miniaturization of embedded capacitor components and resonators. For microwave and mmwave frequency systems, new integration concepts will be needed to go beyond traditional packaging of electronic components as frequencies. Recently, metamaterials have been developed from composite structures with high and low permittivity. Metamaterials have the unique ability to steer microwave beams and provide unusual dielectric and magnetic properties.
集成高频器件需要高介电常数、低损耗和低烧结温度的介电材料。具有更高介电常数(50<¿r<350)的陶瓷比传统的低温共烧陶瓷(5 <¿r< 10)将推动嵌入式电容器组件和谐振器的进一步小型化。对于微波和毫米波频率系统,将需要新的集成概念,以超越传统的电子元件封装频率。近年来,超材料已从高介电常数和低介电常数的复合结构发展而来。超材料具有独特的能力来引导微波波束,并提供不寻常的介电和磁性。
{"title":"Ceramic dielectric materials for microwave resonator arrays","authors":"M. Lanagan, K. Rajab, Duck-Ki Kwon, G. Semouchkin, E. Semouchkina, M. Iwasaki","doi":"10.1109/ISAF.2008.4693749","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693749","url":null,"abstract":"Integrated high frequency devices require high permittivity dielectric materials with low loss as well as low sintering temperatures. Ceramics with higher permittivity (50<¿r<350) than conventional low temperature co-fired ceramics (5 < ¿r < 10) will drive further miniaturization of embedded capacitor components and resonators. For microwave and mmwave frequency systems, new integration concepts will be needed to go beyond traditional packaging of electronic components as frequencies. Recently, metamaterials have been developed from composite structures with high and low permittivity. Metamaterials have the unique ability to steer microwave beams and provide unusual dielectric and magnetic properties.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131807540","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
Piezoelectric actuators with Cu inner electrode 铜内电极压电致动器
Pub Date : 2008-12-02 DOI: 10.1109/ISAF.2008.4693812
Y. Takayama, N. J. Donnelly, C. Randall
The piezoelectric material composition is PZT-SKN with a Li2CO3 flux. This system has been developed successfully for air-fired actuators in PSU with Ag-Pd alloyed inner electrodes. We tried to control the lead activity by adding higher excess PbO in the formulation. Samples were all sintered at 900°C for 6 hours in PO2 = 5.38×10¿12 atm. With 3.0, 4.0wt% PbO excess addition, we note that density, micro-structure and permittivity are similar and there is a high electro-mechanical performance for example, the high field piezoelectric d33 was ~480pm/V. However, there is some decrease in d33 after the sintering in low PO2 and Rayleigh coefficients shows PO2 to slightly suppressing both the intrinsic and extrinsic contribution to piezoelectric properties. Multilayer actuators with copper inner electrode were successfully fabricated with the PZT-SKN after processing with techniques and materials that have low residual carbon.
压电材料成分为PZT-SKN和Li2CO3助焊剂。该系统已成功应用于银钯合金内电极的PSU气动执行器。我们试图通过在配方中添加更高的过量PbO来控制铅的活性。样品均在PO2 = 5.38×10¿12 atm中900℃烧结6小时。当PbO添加量为3.0、4.0wt%时,材料的密度、微观结构和介电常数基本相同,且具有较高的机电性能,高场压电d33为~480pm/V。而在低PO2条件下烧结后,d33有一定的降低,且瑞利系数表明PO2对压电性能的内在和外在贡献都有轻微的抑制作用。采用低残碳的工艺和材料,在PZT-SKN上成功制备了铜内电极多层致动器。
{"title":"Piezoelectric actuators with Cu inner electrode","authors":"Y. Takayama, N. J. Donnelly, C. Randall","doi":"10.1109/ISAF.2008.4693812","DOIUrl":"https://doi.org/10.1109/ISAF.2008.4693812","url":null,"abstract":"The piezoelectric material composition is PZT-SKN with a Li2CO3 flux. This system has been developed successfully for air-fired actuators in PSU with Ag-Pd alloyed inner electrodes. We tried to control the lead activity by adding higher excess PbO in the formulation. Samples were all sintered at 900°C for 6 hours in PO2 = 5.38×10¿12 atm. With 3.0, 4.0wt% PbO excess addition, we note that density, micro-structure and permittivity are similar and there is a high electro-mechanical performance for example, the high field piezoelectric d33 was ~480pm/V. However, there is some decrease in d33 after the sintering in low PO2 and Rayleigh coefficients shows PO2 to slightly suppressing both the intrinsic and extrinsic contribution to piezoelectric properties. Multilayer actuators with copper inner electrode were successfully fabricated with the PZT-SKN after processing with techniques and materials that have low residual carbon.","PeriodicalId":228914,"journal":{"name":"2008 17th IEEE International Symposium on the Applications of Ferroelectrics","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123987421","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
期刊
2008 17th IEEE International Symposium on the Applications of Ferroelectrics
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1