Materials World Network: Local Structure, Function and the Exotic Iroperties of Transition Metal Perovskites

材料世界网络：过渡金属钙钛矿的局域结构、功能和奇异性能

• 批准号: 0806935
• 负责人: Carlo Segre
• 金额: $ 36万
• 依托单位: Illinois Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-10-01 至 2014-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0806935&HistoricalAwards=false
• 关键词: Materials; World; Network; Local; Structure

This project is designed to develop a long-term international collaborative research and education effort among research teams at Illinois Institute of Technology (IIT), Indian Association for the Cultivation of Science (IACS) and S.N. Bose National Center for Basic Sciences, in Kolkota, India. The research focuses on investigating the influence of local structure on the physical properties of complex oxides. This class of materials exhibit many interesting phenomena, for example, coupled structural transitions and collective electronic effects such as metal-insulator transitions, phase separation at low temperatures, and multiferroic behavior. This research collaboration intends to address the important issue of sample quality, which often leads to contradictory results; controlling sample quality is important to understand the manifestly different physical behavior. The specific objectives of the project include: synthesis and characterization of high quality samples of these complex oxides in both the US and Indian laboratories; determination of the electronic properties using photoelectron spectroscopies; measurement of local structure using x-ray diffraction and absorption spectroscopy with synchrotron radiation at the Advanced Photon Source at Argonne National Laboratory; and generation of high impact scientific and technological results along with an understanding of many-body interactions using theoretical tools. The results of these studies are expected to resolve several outstanding questions in this field and contribute to a better understanding of the fundamental properties of these materials, which are promising candidates for potential applications in data manipulation and storage. Furthermore, the complementary expertise of the collaborating research groups provides an ideal opportunity to train graduate students and junior researchers through extended visits to the collaborating laboratories. The students and junior researchers who participate in these exchanges will gain technical expertise and will develop international collaborations, which will benefit their careers. Training gained by junior Indian researchers at the Materials Research Collaborative Access Team beamline of the Advanced Photon Source, will prepare them to take leadership roles in the development and use of the synchrotron source in India. Inclusion of summer IIT undergraduate student interns in the project is designed to provide hands-on scientific research experience in an international setting and expose them to career opportunities through graduate studies. This award is jointly funded by the Division of Materials Research in the Mathematical and Physical Sciences Directorate and the Office of International Science and Engineering ?Africa, Near East & South Asia Program.

该项目的目的是在伊利诺伊理工学院（IIT），印度科学培养协会（IACS）和S.N.的研究团队之间开展长期的国际合作研究和教育工作。Bose国家基础科学中心，位于印度Kolkota。 本研究的重点是研究局域结构对复合氧化物物理性质的影响。这类材料表现出许多有趣的现象，例如，耦合结构转变和集体电子效应，如金属-绝缘体转变，低温下的相分离，以及多铁性行为。这项研究合作旨在解决样品质量的重要问题，这往往会导致矛盾的结果;控制样品质量对于理解明显不同的物理行为非常重要。该项目的具体目标包括：在美国和印度的实验室合成这些复合氧化物的高质量样品并确定其特性;利用光电子能谱测定电子特性;利用X射线衍射和吸收光谱测量局部结构，并在阿贡国家实验室的高级光子源上利用同步辐射进行测量;和产生高影响力的科学和技术成果，沿着使用理论工具对多体相互作用的理解。 这些研究的结果有望解决这一领域的几个突出问题，并有助于更好地了解这些材料的基本性质，这些材料是数据处理和存储中潜在应用的有希望的候选者。此外，合作研究小组的互补专业知识提供了一个理想的机会，通过对合作实验室的长期访问来培训研究生和初级研究人员。参加这些交流的学生和初级研究人员将获得技术专业知识，并将发展国际合作，这将有利于他们的职业生涯。 印度初级研究人员在高级光子源的材料研究合作访问小组光束线获得的培训将使他们做好准备，在印度同步加速器源的开发和使用中发挥领导作用。 在该项目中纳入夏季IIT本科生实习生，旨在提供国际环境中的实践科研经验，并通过研究生学习使他们获得就业机会。该奖项由数学和物理科学理事会材料研究部和国际科学与工程办公室共同资助。非洲、近东和南亚方案。