Magnetism and Magneto-Optics of Artificially -Structured Materials

拟议的工作旨在加深我们对 新型人工结构磁性层状材料， 由无定形和结晶组分组成。 主要 工作重点是：（a） 基本微观相互作用（各向异性和交换） 以及磁性和自旋相关性，（B） 电子结构，光学和磁- 光学性质，以及（c）磁性设计的研究 具有所需特性的材料。 实验类型 包括X射线衍射，电子显微镜， 直流磁化，交流磁化率，穆斯堡尔效应， 椭圆偏振、极克尔效应和小角中子 散射（NIST）。 除了提供关于以下方面的信息外， 制备不同类型的双层和多层膜的方法 层状磁性薄膜的研究应该增加我们的 理解：（a）界面磁性和垂直 各向异性，（B）电子之间的基本关系 基于化学的合金设计结构与原理 新的磁光数据的前景 基于这些系统的存储介质。

The proposed work is intended to deepen our understanding of a novel class artificially-structured, magnetic layered materials, composed of both amorphous and crystalline components. The main thrusts of the work will be: (a) relationships between fundamental microscopic interactions (anisotropy and exchange) and the magnetic properties and spin correlations, (b) relationships between electronic structure, optical, and magneto- optical properties, and (c) studies of the design of magnetic materials with the desired properties. The types of experiments to be performed include x-ray diffraction, electron microscopy, dc magnetization, ac susceptibility, Mossbauer effect, ellipsometry, polar Kerr effect, and small angle neutron scattering (at NIST). In addition to providing information on procedures for producing different types of bilayered and multi- layered magnetic films the research should increase our understanding of: (a) interfacial magnetism and perpendicular anisotropy, (b) fundamental relationships between electronic structure and principles of alloy design based on chemical considerations, and (c) prospects for new magnetic-optic data storage media based on these systems.