Low Temperature Metathesis Routes to New Oxide/Sulfide/Nitride Superlattices

该项目包括开发低温甲烷化路线，以获得包含交替层的新型亚稳超晶格，如金属硫化物/金属氧化物、金属氮化物/金属氧化物或金属氧化物/金属氧化物复合材料。主要目标是开发一种通用的合理的合成策略来制备具有有趣现象的复合超晶格材料，包括作为磁记忆或磁阻材料的金属/磁性超晶格，表现出层间隧道行为和邻近效应的介电/超导超晶格，以及亚铁磁性/超导超晶格。有待开发的策略包括：1)通过软化学实现金属氧化物/金属碳化物超晶格，2)层状氮化物卤化物化合物的复分解化学。与马里兰大学超导电导率研究中心的合作将提供丰富的新结构-性质关联，这将是整个固态/凝聚态社区感兴趣的。%该项目涉及开发新材料合成和加工工具，以优化对高性能材料(如电子和磁性材料)的搜索。由于与马里兰大学超导研究中心安排了强有力的合作，该项目的教育部分尤其强大，因为它将为对工业工作感兴趣的本科生、研究生和博士后研究员提供出色的培训。*

This project involves the development of low temperature methasis routes to new and novel metastable superlattices containing alternating layers such as metal sulfide/metal oxide, metal nitride/metal oxide or metal oxide/metal oxide composites. The primary goal is to develop a generic rational synthetic strategy for preparing composite superlattice materials with interesting phenomena that include metallic/magnetic superlattices as magnetic memory or magnetoresistive materials, dielectric/superconducting superlattices exhibiting interlayer tunneling behavior and proximity effects, and ferrimagnetic/superconducting superlattices. Strategies to be developed include: 1) Metal Oxide/Metal Chacogenide Superlattices through Soft Chemistry, and 2) Metathesis Chemistry with Layered Nitride Halide Compounds. Collaborations with the Center for Suerconductivity Research at the University of Maryland will provide a wealth of new structure-property correlations that will be of interest to the solid state/condensed matter community as a whole.%%%This project involves the development of new materials synthesis and processing tools to optimize the search for high performance materials such as electronic and magnetic materials. Due to the strong collaborations that have been arranged with the Center for Superconductivity Research at the University of Maryland, the education component of this project is particularly strong in that it will provide excellent training for undergraduate, graduate, and postdoctoral fellows interested in working in industry.***