NSF/EPRSC joint proposal on the effect of constraint and thickness on octahedral tilt transitions in perovskite structured thin films

NSF/EPRSC 关于钙钛矿结构薄膜中约束和厚度对八面体倾斜跃迁影响的联合提案

• 批准号: EP/D067049/1
• 负责人: Ian Reaney
• 金额: $ 46.46万
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2007
• 资助国家: 英国
• 起止时间: 2007 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FD067049%2F1
• 关键词: NSF; EPRSC; joint; proposal; effect

This proposal aims to investigate a range of perovskite structured thin films using a combination of Raman spectroscopy, in-situ transmission electron microscopy and synchrotron X-radiation in order to determine how constraint controls the onset and temperature dependence of octahedral tilt transitions in thin films and ensuing domain structure. It is anticpated that this will give a greater understanding of how constraint influences functional properties in ferroelectric and dielectric thin layers. The proposal will concentrate on three key systems in which tilt transitions are known to influence macroscopic properties; PbZrxTi(1-x)O3, Ag(Nb,Ta)O3 and the newly discovered (1-x)BiMeO3-xPbTiO3 solid solutions. The proposal is joint between University of Sheffield, Pennsylvania State University and Argonne National Laboratory. The latter will submit an independent National Science Foundation proposal which directly compliments the work proposed here. The programme is for 4 years at the request of the National Science Foundation, USA.

该提案旨在研究一系列的钙钛矿结构的薄膜使用的组合的拉曼光谱，原位透射电子显微镜和同步加速器X-辐射，以确定如何约束控制的开始和温度依赖性的八面体倾斜转变的薄膜和随后的域结构。这将有助于我们更好地理解约束对铁电和介电薄膜功能特性的影响。该提案将集中在三个关键系统，其中倾斜转变已知影响宏观性质; PbZrxTi（1-x）O3，Ag（Nb，Ta）O3和新发现的（1-x）BiMeO 3-xPbTiO 3固溶体。这项提议是由谢菲尔德大学、宾夕法尼亚州立大学和阿贡国家实验室联合提出的。后者将提交一份独立的国家科学基金会提案，直接补充这里提出的工作。应美国国家科学基金会的要求，该方案为期4年。

项目成果

Coherently strained epitaxial Pb(Zr1-xTix)O3 thin films

相干应变外延 Pb(Zr1-xTix)O3 薄膜

• DOI: 10.1063/1.4825215
• 发表时间: 2013
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: Johnson-Wilke R

Phase transitions and octahedral rotations in epitaxial Ag(TaxNb1-x)O3 thin films under tensile strain

拉伸应变下外延 Ag(TaxNb1-x)O3 薄膜的相变和八面体旋转

• DOI: 10.1063/1.4913283
• 发表时间: 2015
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: Johnson-Wilke R