Ternary and Quaternary Nitrides

小行星9805719 本研究的目的是探索新的固态氮化物的合成、晶体结构和性能。 由于一些二元氮化物具有相当大的技术实用性，例如，涂层，陶瓷和超导体，我们建议研究更复杂的氮化物，可能会导致增强或新的性能。 我们的方法包括使用正电性金属来稳定三元相和钠助熔剂来生长一些化合物的小晶体。 我们还将扩大我们的合成方法，使用比钠更普遍有用的金属熔剂，特别是镓，镁和锌。 这些材料的结构和性能将与相关化合物如氧化物，硫化物或磷化物进行比较。 %二元氮化物，如氮化硅、氮化铝、氮化钛和氮化镓，具有许多技术用途，如固态激光器、硬质涂层和高温陶瓷。 然而，更复杂的氮化物还没有被制备或研究。 这项研究将集中在建立制备这种材料的方法及其晶体结构和性能。 ***

9805719 DiSalvo The objective of this research is to explore the synthesis of new solid state nitrides, their crystal structure and properties. Since a number of binary nitrides have considerable technological utility as for example, coatings, ceramics, and superconductors, we propose to study more complex nitrides that may lead to enhanced or new properties. Our approaches include the use of electropositive metals to stabilize a ternary phase and of sodium flux to grow small crystals of some compounds. We will also expand our synthetic methods to the use of metallic fluxes that are more generally useful than sodium, specifically gallium, magnesium, and zinc. The structures and properties of these materials will be compared to related compounds such as oxides, sulfides or phosphides. %%% Binary Nitrides, such as Silicon Nitride, Aluminum Nitride, Titanium Nitride, and Gallium Nitride have many technological uses as solid state lasers, hard coatings, and high temperature ceramics. Yet more complex nitrides have not been prepared or studied. This research will focus on establishing the methods of preparing such materials and on their crystal structures and properties. ***