RUI: Linear and Nonlinear Excitations in Layered Antiferromagnets and Nanostructured Magnets

9703783邮票这项资助支持一位年轻理论家在以本科生为主的机构的工作。该基金的研究项目是该PI在磁性薄膜和外延生长磁超晶格中磁矩的动力学特性方面的开创性工作的延续。在这里，PI提出了一种可能的新方法，通过检查畴壁共振的性质来确定磁性薄膜之间的交换耦合。其他项目包括：(1)结构缺陷对薄膜磁有序和磁相变的影响；(2)量子点阵列的动态非线性效应研究。这位年轻的PI，在一个主要是本科生的机构，被支持研究薄膜和非常小颗粒的磁性理论。一些研究侧重于有限频率的行为。PI表明，人们可以通过研究相邻薄膜中畴壁相对于彼此的运动来收集有关磁相互作用的信息。他计划开发一种理论形式来描述非常小的颗粒阵列的高功率吸收。最后，他还计划研究薄膜中结构缺陷与磁有序和磁相变之间的关系。*＊*

9703783 Stamps This grant supports the work of a young theorist at a predominantly undergraduate institution. The research projects in this grant are a continuation of seminal work by this PI on dynamical properties of magnetic moments in magnetic thin films and epitaxially grown magnetic superlattices. Here the PI is proposing work on a possible new way of determining the exchange coupling between thin magnetic films by examining the properties of domain wall resonance. Other projects consist of: (1) Role of structural defects on the magnetic order and magnetic phase transition in thin films and (2) study of dynamic nonlinear effects in arrays of quantum dots. %%% This young PI, at a predominantly undergraduate institution, is being supported to work on the theory of magnetism in thin films and very small grains. Some of the research focuses on finite frequency behavior. The PI suggests that one can gather information about the magnetic interactions by studying the motion of domain walls with respect to each other, in adjacent thin films. He is planning to develop a theoretical formalism to describe the high power absorption in arrays of very small grains. Finally he is also planning to study the relationship between structural defects and the magnetic order and magnetic phase transitions in thin films. ***