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

该项目涉及开发新的和新颖的亚稳超晶格的低温甲烷化路线，该超晶格包含交替层，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/金属氧化物复合物。 主要目标是开发一种通用的合理的合成策略，用于制备具有有趣现象的复合超晶格材料，包括作为磁存储或磁阻材料的金属/磁性超晶格，表现出层间隧穿行为和邻近效应的介电/超导超晶格，以及亚铁磁/超导超晶格。 待开发的策略包括：1）通过软化学的金属氧化物/金属Chacogenide超晶格，和2）用层状氮化物卤化物化合物的复分解化学。 与马里兰州大学超导研究中心的合作将提供大量新的结构-性质相关性，这些相关性将对整个固态/凝聚态社区产生兴趣。该项目涉及新材料合成和加工工具的开发，以优化对电子和磁性材料等高性能材料的研究。 由于与马里兰州大学超导研究中心的密切合作，该项目的教育部分特别强大，因为它将为有兴趣在工业界工作的本科生、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.***