NSF-Europe: Atomic Defects and Their Dramatic Influence on Nanoscale Electrical, Elastic, and Optical Properties in Ferroelectrics

NSF-Europe:原子缺陷及其对铁电体纳米级电学、弹性和光学性质的巨大影响

基本信息

  • 批准号:
    0349632
  • 负责人:
  • 金额:
    $ 31.6万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2004
  • 资助国家:
    美国
  • 起止时间:
    2004-08-01 至 2007-07-31
  • 项目状态:
    已结题

项目摘要

The central goal of this proposal is to probe the static and dynamic interactions between domain walls and atomic defects structure, and their influence on the nanoscale electrical, elastic and optical properties of ferroelectrics. Ferroelectrics have built-in electrical polarization in their crystal structure that can be switched by an external field. In classic ferroelectrics lithium niobate, LiNbO3 and lithium tantalate, LiTaO3, the PIs have recently discovered dramatic order-of-magnitude changes in the macroscale properties (such as coercive fields, internal fields, domain structure, lattice strain and optical properties) with small amounts of non-stoichiometry in the crystals. The nanoscale local structure of a single ferroelectric domain wall also exhibits wide regions of strain, electric fields and optical birefringence (over micrometers) that are contrary to the theoretical expectations from an atomically sharp antiparallel wall (nanometer). Experimental evidence suggests point defect complexes as the main reason for this discrepancy. These discoveries open up a host of fundamental questions about the interaction between atomic defects and ferroelectric lattice from nano-to-macro scales. A focused multifaceted approach is used combining experimental and theoretical tools. This approach consists of experimentally probing defects using optical and magnetic spectroscopy of "designer" probe ions, combined with probing the local structure of domain walls such as strains, local electric fields, polarization gradient, and nanoscale optical properties using X-ray synchrotron imaging, and near-field optical and scanning probe microscopies. These experimental studies will be closely coupled with atomistic modeling of point defect complexes, domain walls, and their interactions using electronic-structure and atomic-level approaches. There are many applications of ferroelectric materials, such as micro-drills used in eye surgery, high speed optical modulators for a fast internet, underwater pressure sensors in submarines, and bar-code readers at grocery checkout counters. In these applications, the material is manipulated by adding small amounts of dopants that can dramatically alter the macroscopic properties. This largely empirical body of knowledge is exploited in industry today but lacks a fundamental grounding in precisely how these point defects function on a nanoscale and how these interactions scale up to influence macroscale properties. This work aims at a level of understanding that would enable science-based strategies to "design" materials with desired properties. This NSF project is co-funded by the Division of Materials Research (Ceramics) and the International Office (Western Europe) as a Cooperative Activity in Materials Research between the NSF and Europe (NSF 02-135). This project is being carried out in collaboration with the Applied Physics and Optical Communications groups (Profs. Sohler, Zrenner, and Noe) at the University of Paderborn, Germany and the Applied Optics Group (Prof. Buse) at the University of Bonn, Germany.
该方案的主要目标是研究畴壁和原子缺陷结构之间的静态和动态相互作用,以及它们对铁电体纳米尺度电学、弹性和光学性质的影响。铁电体在其晶体结构中具有内置的电极化,可以通过外部场来切换。 在经典的铁电体LiNbO 3和LiTaO 3中,PI最近发现宏观尺度性质(如矫顽场,内场,畴结构,晶格应变和光学性质)的戏剧性数量级变化,晶体中存在少量的非化学计量比。 单个铁电畴壁的纳米级局部结构也表现出宽区域的应变、电场和光学双折射(超过微米),这与原子级尖锐的反平行壁(纳米)的理论预期相反。 实验证据表明,点缺陷复合物作为这种差异的主要原因。这些发现开启了从纳米到宏观尺度上原子缺陷与铁电晶格相互作用的一系列基本问题。一个集中的多方面的方法是结合实验和理论工具。 这种方法包括实验探测缺陷,使用光学和磁光谱的“设计师”探针离子,结合探测的局部结构域壁,如应变,局部电场,极化梯度,和纳米级的光学性能,使用X射线同步辐射成像,近场光学和扫描探针显微镜。这些实验研究将与点缺陷复合物、畴壁及其相互作用的原子模型密切相关,这些模型使用电子结构和原子水平的方法。 铁电材料有许多应用,例如眼科手术中使用的微型钻头,用于快速互联网的高速光调制器,潜艇中的水下压力传感器以及杂货店收银台的条形码阅读器。在这些应用中,通过添加少量掺杂剂来操纵材料,这些掺杂剂可以显著改变宏观特性。这种主要是经验性的知识体系在今天的工业中得到了利用,但缺乏一个基本的基础,确切地说,这些点缺陷是如何在纳米尺度上发挥作用的,以及这些相互作用如何扩大到影响宏观尺度的性质。 这项工作的目的是在一定程度上的理解,使科学为基础的战略,“设计”材料所需的性能。该NSF项目由材料研究部(陶瓷)和国际办公室(西欧)共同资助,是NSF和欧洲之间材料研究的合作活动(NSF 02-135)。该项目正在与应用物理和光通信小组(教授)合作进行。Sohler,Zrenner和Noe)和德国波恩大学的应用光学小组(Buse教授)。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ 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 }}

Volkmar Dierolf其他文献

Molecular dynamics simulation of the effect of cooling rate on the structure and properties of lithium disilicate glass
  • DOI:
    10.1016/j.jnoncrysol.2021.120991
  • 发表时间:
    2021-10-01
  • 期刊:
  • 影响因子:
  • 作者:
    Wei Sun;Volkmar Dierolf;Himanshu Jain
  • 通讯作者:
    Himanshu Jain
高温アニール処理を施したEu,O共添加GaNの光励起・電流注入下における発光特性
高温退火处理的Eu,O共掺GaN在光激发和电流注入下的发光特性
  • DOI:
  • 发表时间:
    2023
  • 期刊:
  • 影响因子:
    0
  • 作者:
    岩谷孟学;市川修平;Dolf Timmerman;Volkmar Dierolf;Hayley Austin;Brandon Mitchell;舘林潤;藤原康文
  • 通讯作者:
    藤原康文

Volkmar Dierolf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('Volkmar Dierolf', 18)}}的其他基金

REU Site: Research Experience for Undergraduates in Physics at Lehigh University
REU 网站:理海大学物理学本科生的研究经验
  • 批准号:
    1852010
  • 财政年份:
    2019
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Continuing Grant
REU Site: Research Experience for Undergraduates in Physics at Lehigh University
REU 网站:理海大学物理学本科生的研究经验
  • 批准号:
    1359195
  • 财政年份:
    2014
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Continuing Grant
NSF Workshop on US- Japan Frontiers in Novel Photonic-Magnetic Devices. To be Held in Nara, Japan, September, 20-23, 2013.
NSF 美日新型光子磁器件前沿研讨会。
  • 批准号:
    1343070
  • 财政年份:
    2013
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Standard Grant
EAGER - Exploiting Strain-Induced Coupling between Rare Earth Ions and the GaN host for Improved Electroluminescence and Magnetic Devices
EAGER - 利用稀土离子和 GaN 主体之间的应变感应耦合来改进电致发光和磁性器件
  • 批准号:
    1140038
  • 财政年份:
    2011
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Standard Grant
Materials World Network: Novel Material Platforms with Reduced Dimensionality for Next Generation Ferroelectric Photonics
材料世界网络:用于下一代铁电光子学的降维新型材料平台
  • 批准号:
    1008075
  • 财政年份:
    2010
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Standard Grant
Site-Selective Optical and Magnetic Properties of Rare Earth Ion Doped Nitrides
稀土离子掺杂氮化物的位点选择性光学和磁性
  • 批准号:
    0705217
  • 财政年份:
    2007
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Standard Grant
Materials World Network: Nanoscale Structure and Shaping of Ferroelectric Domains
材料世界网络:铁电畴的纳米结构和成形
  • 批准号:
    0602986
  • 财政年份:
    2006
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Continuing Grant

相似海外基金

Open University (The) and Low Carbon Europe Limited KTP 23_24 R2.
开放大学 (The) 和低碳欧洲有限公司 KTP 23_24 R2。
  • 批准号:
    10077030
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Knowledge Transfer Partnership
Store Electricity and Heat foR climatE Neutral Europe (SEHRENE)
为欧洲气候中和储存电力和热能 (SEHRENE)
  • 批准号:
    10105664
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    EU-Funded
6G-PATH: 6G Pilots and Trials Through Europe
6G-PATH:欧洲 6G 试点和试验
  • 批准号:
    10107746
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    EU-Funded
CO2 Routes Across Europe (COREU)
穿越欧洲的二氧化碳路线 (COREU)
  • 批准号:
    10111502
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    EU-Funded
COEXIST-Maximising data from fragmented bone to understand the coexistence of late Neanderthals and early Homo sapiens in central and southeast Europe
共存——最大化来自碎片骨骼的数据,以了解中欧和东南欧晚期尼安德特人和早期智人的共存
  • 批准号:
    EP/Y037448/1
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Research Grant
Strategies for achieving equity and inclusion in education, training and learning in democratic Europe
在民主欧洲实现教育、培训和学习公平和包容的战略
  • 批准号:
    10108849
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    EU-Funded
CO2 ROUTES ACROSS EUROPE (COREU)
穿越欧洲的二氧化碳路线 (COREU)
  • 批准号:
    10110613
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    EU-Funded
A Comparative Study of the Influence of Glossing on the Historical Development of Japanese and the Languages of Europe
注释对日语与欧洲语言历史发展影响的比较研究
  • 批准号:
    24K03860
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
(SCIN) Screen Internationalism: Audiovisual Pedagogies of Modernisation between Postwar Europe and Latin America
(SCIN) 银幕国际主义:战后欧洲和拉丁美洲之间现代化的视听教育学
  • 批准号:
    EP/Y015088/1
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Fellowship
University of Bradford and Lead Tech (Europe) Ltd KTP 23_24 R1
布拉德福德大学和 Lead Tech (Europe) Ltd KTP 23_24 R1
  • 批准号:
    10072469
  • 财政年份:
    2024
  • 资助金额:
    $ 31.6万
  • 项目类别:
    Knowledge Transfer Partnership
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了