Characterization of the Growth, Structure, and Magnetic Ordering of Metal Oxide Thin-Films and Superlattices

研究了Fe_3O_4和NiO单晶金属氧化物超晶格的晶体结构与磁序的关系。这些材料的超晶格表现出强烈的晶格和化学调制相干性，尖锐的界面，与超晶格的其他性质强烈耦合的界面应变，强烈依赖于层厚的磁有序，以及最终的高度各向异性的电子电导率。对这些和类似的层状磁性结构的深入研究应该会使我们理解导致磁性有序的基本物理机制，以及磁性材料中电子有序和结构有序之间的相互作用。

The relationship between crystalline structure and magnetic ordering is being studied in single crystal metal oxide superlattices of Fe3O4 and NiO. Superlattices of these materials show strong lattice and chemical modulation coherence, sharp interfaces, an interfacial strain that couples strongly with other properties of the superlattices, magnetic ordering which is strongly layer thickness dependent, and, finally, a highly anisotropic electron conductivity. Extended study of these and similar layered magnetic structures should lead us to an understanding of the fundamental physical mechanisms that lead to magnetic ordering, as well as the interplay between electronic and structural ordering in magnetic materials.