Mechanical doping of strontium titanate
钛酸锶的机械掺杂
基本信息
- 批准号:398795637
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2018
- 资助国家:德国
- 起止时间:2017-12-31 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The goal of this proposal lies in a scientific elucidation of the influence of dislocations on the electrical conductivity of strontium titanate (SrTiO3). It is known, that dislocation cores in this material have a very high density of oxygen vacancies and are therefore positively charged. A compensating charge zone around the dislocations is negatively charged. The dislocations thereby strongly alter the defect equilibrium in the sample. Dislocations are to be introduced in blocks of SrTiO3 at room temperature and intermediate temperature by plastic deformation. Then the electrical properties are to be determined by impedance spectroscopy globally as well as locally at well-defined dislocation structures. Before plastic deformation the starting defect concentration can be modified by either acceptor-doping, donor-doping or tempering in reduced atmosphere. Similarly, the dislocation structure can be modified after plastic deformation by temperature and electric field treatment. Oxygen transport is to be quantified by secondary mass spectroscopy. A high resolution multi-scale characterization of the dislocation network and its dynamics is envisaged using dark-field X-ray microscopy in collaboration with the DTU in Denmark at a beamline at the ESRF. This affords imaging singular dislocations and their transformation under mechanical load, electric field and temperature. Commercial SrTiO3 single crystals as well as specially manufactured SrTiO3 single crystals with low dislocation density will be utilized. The latter provides the advantage to have a large effect of dislocation density through plastic deformation. Preliminary work provided plastic deformation of SrTiO3 single crystals as well as determination of the density of dislocations by rocking curve quantification and by determining etch pits.
该提案的目的在于科学地阐明位错对钛酸锶(SrTiO 3)导电性的影响。众所周知,这种材料中的位错核具有非常高的氧空位密度,因此带正电。位错周围的补偿电荷区带负电。位错从而强烈地改变了样品中的缺陷平衡。在室温和中温条件下,通过塑性变形在SrTiO_3块体中引入位错。然后,通过阻抗谱确定的电气性能,以及在定义良好的位错结构的局部。在塑性变形之前,起始缺陷浓度可以通过受主掺杂、施主掺杂或在还原气氛中回火来改变。同样,位错结构可以修改塑性变形后,通过温度和电场处理。氧气传输将通过二次质谱法进行定量。设想使用暗场X射线显微镜与丹麦的DTU合作,在ESRF的光束线处对位错网络及其动力学进行高分辨率多尺度表征。这提供了成像奇异位错及其在机械载荷、电场和温度下的转变。将使用商业SrTiO 3单晶以及专门制造的具有低位错密度的SrTiO 3单晶。后者提供的优点是通过塑性变形对位错密度有很大的影响。初步工作提供了SrTiO 3单晶的塑性变形以及通过摇摆曲线定量和通过确定蚀坑来确定位错的密度。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Conceptual Framework for Dislocation-Modified Conductivity in Oxide Ceramics Deconvoluting Mesoscopic Structure, Core, and Space Charge Exemplified for SrTiO3.
- DOI:10.1021/acsnano.0c04491
- 发表时间:2020-11
- 期刊:
- 影响因子:17.1
- 作者:L. Porz;T. Frömling;A. Nakamura;Ning Li;Ryohei Maruyama;K. Matsunaga;P. Gao;H. Simons;C. Dietz-C
- 通讯作者:L. Porz;T. Frömling;A. Nakamura;Ning Li;Ryohei Maruyama;K. Matsunaga;P. Gao;H. Simons;C. Dietz-C
High temperature creep‐mediated functionality in polycrystalline barium titanate
- DOI:10.1111/jace.16881
- 发表时间:2019-11
- 期刊:
- 影响因子:3.9
- 作者:Pengrong Ren;Marion Höfling;J. Koruza;S. Lauterbach;Xijie Jiang;T. Frömling;D. Khatua;C. Dietz;L. Porz;R. Ranjan;H. Kleebe;J. Rödel
- 通讯作者:Pengrong Ren;Marion Höfling;J. Koruza;S. Lauterbach;Xijie Jiang;T. Frömling;D. Khatua;C. Dietz;L. Porz;R. Ranjan;H. Kleebe;J. Rödel
Bridging the Gap between Bulk Compression and Indentation Test on Room-Temperature Plasticity in Oxides: Case Study on SrTiO3
- DOI:10.3390/cryst10100933
- 发表时间:2020-10-01
- 期刊:
- 影响因子:2.7
- 作者:Fang, Xufei;Porz, Lukas;Nakamura, Atsutomo
- 通讯作者:Nakamura, Atsutomo
Donor and acceptor-like self-doping by mechanically induced dislocations in bulk TiO2
- DOI:10.1016/j.nanoen.2021.105944
- 发表时间:2021-03-13
- 期刊:
- 影响因子:17.6
- 作者:Muhammad, Qaisar Khushi;Porz, Lukas;Froemling, Till
- 通讯作者:Froemling, Till
Dislocation-toughened ceramics.
- DOI:10.1039/d0mh02033h
- 发表时间:2021-05
- 期刊:
- 影响因子:13.3
- 作者:L. Porz;Arne J. Klomp;X. Fang;Ning Li;C. Yildirim;C. Detlefs;E. Bruder;Marion Höfling;W. Rheinheimer;E. Patterson;P. Gao;K. Durst;A. Nakamura;K. Albe;H. Simons;J. Rödel
- 通讯作者:L. Porz;Arne J. Klomp;X. Fang;Ning Li;C. Yildirim;C. Detlefs;E. Bruder;Marion Höfling;W. Rheinheimer;E. Patterson;P. Gao;K. Durst;A. Nakamura;K. Albe;H. Simons;J. Rödel
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Professor Dr.-Ing. Jürgen Rödel其他文献
Professor Dr.-Ing. Jürgen Rödel的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Professor Dr.-Ing. Jürgen Rödel', 18)}}的其他基金
Influence of Structural Phase Transitions on the Mechanical Behavior of Lead-Free Potassium Sodium Niobate Piezoceramics
结构相变对无铅铌酸钾钠压电陶瓷力学行为的影响
- 批准号:
392442956 - 财政年份:2018
- 资助金额:
-- - 项目类别:
Research Grants
Toughening of bismuth-based lead-free piezoceramics
铋基无铅压电陶瓷的增韧
- 批准号:
229436520 - 财政年份:2012
- 资助金额:
-- - 项目类别:
Research Grants
Lead-free piezoelectric single crystals with high strain: orientation dependance, polarization rotation and morphotropic phase boundaries
高应变无铅压电单晶:取向依赖性、极化旋转和同形相界
- 批准号:
194906439 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Research Grants
Herstellung und Schaltverhalten neuer wismuthaltiger Hochtemperaturpiezokeramiken
新型含铋高温压电陶瓷的制备及开关行为
- 批准号:
14926878 - 财政年份:2005
- 资助金额:
-- - 项目类别:
Research Grants
Strategien zur Zukunftssicherung der keramischen Forschung
确保陶瓷研究未来的策略
- 批准号:
5456543 - 财政年份:2005
- 资助金额:
-- - 项目类别:
Research Grants
Anisotropieentwicklung beim Foliengießen, Trocknen und Sintern keramischer LTCC-Substrate (Low Tmeperatur Co-fired Ceramics)
陶瓷 LTCC 基板(低温共烧陶瓷)的薄膜流延、干燥和烧结过程中的各向异性发展
- 批准号:
5435066 - 财政年份:2004
- 资助金额:
-- - 项目类别:
Research Grants
Crack growth in ferroelectrics driven by cyclic electric loading
循环电负载驱动的铁电体裂纹扩展
- 批准号:
5397373 - 财政年份:2002
- 资助金额:
-- - 项目类别:
Research Grants
Crack opening displacement, crack closure stresses and R-curves in ceramics as function of crack geometry and stress field
陶瓷中裂纹张开位移、裂纹闭合应力和 R 曲线作为裂纹几何形状和应力场的函数
- 批准号:
5254161 - 财政年份:2000
- 资助金额:
-- - 项目类别:
Research Grants
Experiment and computer simulation on microcracking in oxide ceramics due to an anisotropy in thermal expansion
氧化物陶瓷热膨胀各向异性微裂纹的实验与计算机模拟
- 批准号:
5271866 - 财政年份:2000
- 资助金额:
-- - 项目类别:
Research Grants
相似国自然基金
等离子体浸没离子注入制备P型ZnO薄膜材料的研究
- 批准号:10975037
- 批准年份:2009
- 资助金额:42.0 万元
- 项目类别:面上项目
相似海外基金
Study on p-type doping of ultra wide bandgap rutile-structured germanium oxide
超宽带隙金红石结构氧化锗的p型掺杂研究
- 批准号:
24K17312 - 财政年份:2024
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Early-Career Scientists
Collaborative Research: RUI: Patterned Doping of Layered Materials
合作研究:RUI:层状材料的图案化掺杂
- 批准号:
2300639 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Continuing Grant
Anti-doping education in the wake of the International Standard for Education: A case study of British karate
国际教育标准之后的反兴奋剂教育:以英国空手道为例
- 批准号:
2884853 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Studentship
In research for concept of Athlete Biological Passport in gene doping tsst
基因兴奋剂运动员生物护照概念研究中
- 批准号:
23H03264 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (B)
Understanding Molecular And Photo-Assisted Doping of Organic Electronic Materials
了解有机电子材料的分子和光辅助掺杂
- 批准号:
2330929 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
Development of Functional Thin Films with Ultra-Trace Doping by Powder Sputtering
粉末溅射超微量掺杂功能薄膜的开发
- 批准号:
23K03373 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (C)
Establishment of a novel carrier doping method for molecular crystals and precise electronic state control
分子晶体新型载流子掺杂方法的建立及精确电子态控制
- 批准号:
22KJ2334 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Grant-in-Aid for JSPS Fellows
RUI: Magnetic properties of epsilon-Fe2O3 and alpha-FeOOH: an investigation of phase conversions and cations doping.
RUI:ε-Fe2O3 和 α-FeOOH 的磁性:相转换和阳离子掺杂的研究。
- 批准号:
2243552 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
N-Doping of Organic Semiconductor Materials
有机半导体材料的N掺杂
- 批准号:
2223922 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: RUI: Patterned Doping of Layered Materials
合作研究:RUI:层状材料的图案化掺杂
- 批准号:
2300640 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Continuing Grant