图形化多层铁磁薄膜的微磁学模拟与电输运性质研究

项目名称： 图形化多层铁磁薄膜的微磁学模拟与电输运性质研究

项目编号： No.51301031

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 一般工业技术

项目作者： 陆海鹏

作者单位： 电子科技大学

项目金额： 25万元

中文摘要： 高导电特性限制了高磁导率铁磁薄膜在微波领域的实际应用，图形化多层结构为这类材料的应用设计提供了一条新的思路。为避免常规的电磁参数等效研究方法对图形单元之间、各膜层之间相互物理作用的忽略，本项目从材料内部磁矩分布状态、磁畴变化规律以及电子迁移等方面出发，研究这些微观物理量对图形化多层复合材料宏观电磁性能的影响。项目以FeCo基铁磁薄膜为主要研究对象，重点研究微图形之间以及多层膜间的磁化与反磁化过程、电输运过程，探索图形化多层薄膜内部磁矩分布与磁畴变化规律，以及在这种多相复合体系中，图形相的分布、形状、尺寸等对电子迁移过程的影响规律，最终提出一种图形化多层铁磁薄膜宏观电磁性能的调控设计方法，为开发高频磁敏感元器件及电磁辐射控制材料提供技术指导与技术支撑。

中文关键词： 图形化；铁磁薄膜；微磁学；模拟；电性能

英文摘要： The practical applications of the ferromagnetic film with high permeability in microwave field are limited by its highly conductive characteristic. The patterned multilayer structures provide a new way of thinking for the applications of these materials. The physical interactions between the pattern units or between each layer are ignored in the analytical methods by effective medium theory. In order to avoid such an approximation, the research will start from the material internal state of distribution of magnetic moments, the variation of the magnetic domains, as well as the migration of electrons to study these microscopic physical quantities impact on the macroscopic electromagnetic properties of patterned multilayer. FeCo-based ferromagnetic film will be the main object in the research. Magnetization, magnetization reversal and electrical transport process will be the research emphasis. The internal distribution of magnetic moments and magnetic domains of the patterned multilayer will be explored. The influence to electron migration process by the distribution, shape, dimensions of the pattern units will also be studied. We will commit to propose a method for adjusting the electromagnetic parameters of the pattern multilayer. And to provide technical guidance and technical support for the development of hig

英文关键词： Patterned；ferromagnetic films；micromagnetic；simulation；Reflection