Crystal Growth, Structure and Property Relationships of Yb Intermetallics

Yb金属间化合物的晶体生长、结构和性能关系

• 批准号: 0756281
• 负责人: Julia Chan
• 金额: $ 33万
• 依托单位: Louisiana State University
• 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: 2008-04-15 至 2012-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0756281&HistoricalAwards=false
• 关键词: Crystal; Growth; Structure; Property; Relationships

This project aims to grow and characterize single crystals of rare earth intermetallics, correlate their structure and properties, and look for new phenomena. The synthesis of these materials in single crystalline form will be addressed as one of the primary driving forces of basic research in the chemistry of new materials. To understand physical properties of novel materials clearly, it is essential to grow crystals that are large (at least 2-5 mm3) and of high quality for the measurement of properties. Training future crystal growers to interact with collaborators in national labs as well with international scientists is vital to advancing materials research. Students involved in this project will continue to be involved in educational activities such as doing hands on demonstrations and developing materials-related demonstrations. The PI will also continue with outreach efforts to under-represented minorities at the high school, undergraduate and graduate level. %%%The exchange mechanisms and spin correlations mediated by itinerant electrons have attracted much interest due to the emerging field of spin electronics. A goal for this project is to grow single crystals of cerium and ytterbium and ytterbium intermetallic phases in the lanthanide-copper-X (X = gallium, tin, antimony) systems in which the phenomena and/or implications of heavy fermion behavior, superconductivity, magnetism and/or magnetoresistance may be observed and studied. New families of intermetallics will be investigated with the motivation of correlating structure and properties, in particular uncovering emergent ordered phases arising from quantum fluctuations. Students will perform hands on demonstrations and will develop materials-related demonstrations for incorporation into Chem Demo programs. The PI will also develop outreach projects for under-represented minorities at the high school, undergraduate and graduate level. Students will interact with collaborators in national labs as well with international scientists.

该项目旨在生长和表征稀土金属间化合物单晶，关联其结构和性质，并寻找新现象。这些材料以单晶形式的合成将被视为新材料化学基础研究的主要驱动力之一。为了清楚地了解新材料的物理性质，必须生长大的（至少2-5 mm 3）和高质量的晶体以测量性质。培训未来的晶体种植者与国家实验室的合作者以及国际科学家进行互动，对于推进材料研究至关重要。参与该项目的学生将继续参与教育活动，如动手演示和开发与材料相关的演示。PI还将继续在高中、本科和研究生阶段向代表性不足的少数群体开展外联工作。 由于自旋电子学的兴起，由巡游电子介导的交换机制和自旋关联引起了人们的广泛兴趣。 该项目的目标是在镧系元素-铜-X（X =镓、锡、锑）系统中生长铈和镱以及镱金属间相的单晶，其中可以观察和研究重费米子行为、超导性、磁性和/或磁阻的现象和/或含义。 金属间化合物的新家庭将与相关的结构和性能的动机进行调查，特别是揭示新兴的有序相所产生的量子涨落。 学生将进行演示，并将开发材料相关的演示纳入化学演示程序。 PI还将在高中、本科和研究生阶段为代表性不足的少数民族制定外联项目。 学生将与国家实验室的合作者以及国际科学家进行互动。