项目名称： 基于氮化铁相结构的输运性质研究

项目编号： No.11504247

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 数理科学和化学

项目作者： 李国科

作者单位： 石家庄铁道大学

项目金额： 20万元

中文摘要： 针对氮化铁的输运性质缺乏系统研究的现状，本项目在实现氮化铁薄膜相结构精确调控的基础上，围绕其输运性质，展开两方面的研究工作：一方面通过载流子浓度、电子迁移率和磁电阻等性质的系统表征，阐明氮化铁的相结构、磁性、氮含量及其分布有序度对电子输运性质的影响规律，为拓展氮化铁在自旋电子器件上的应用提供实验支持；另一方面结合反常霍尔效应的最新研究进展，利用氮化铁多样的铁磁相结构、及其交换作用对氮含量的依赖性来探讨反常霍尔效应的理论机制，揭示交换劈裂和相结构对反常霍尔效应的影响规律，为反常霍尔效应的研究提供新思路。

中文关键词： 氮化铁；输运性质；相结构；反常霍尔效应；磁电阻

英文摘要： The application of iron nitrides in spintronics is tightly related to its transport properties, for which systematic studies are still lacking. In this project, systematic transport measurements will be carried out for iron nitrides, and the carrier density, mobility and magnetoresistance will be obtained. The influence of the phase structure, nitrogen concentration and magnetization on the transport properties will be extracted in order to understand the magnetic and electronic properties of iron nitrides. Subsequently, the anomalous Hall effect in iron nitrides will be systematically investigated, taking advantage of the fact that the phase structure, as well as the exchange interaction, can be tuned using interstitial N atoms. The relationship between the anomalous Hall effect and the magnetization will be analyzed, which will allow us to elucidate the contributions of exchange splitting and phase structures to the anomalous Hall effect. The results of this project will provide important references for the application of iron nitrides in spintronics.

英文关键词： Iron nitride;Transport property;Phase structure;Anomalous Hall effect;Magnetoresistance