埋嵌型过渡金属氧化物复合纳米颗粒磁学性能的多场协同调制

深入研究埋嵌型过渡金属氧化物复合纳米颗粒微结构、物理外场调制与磁学性能之间的关系，对于调控和优化其磁学性能以及构造新型功能器件具有重要的指导意义。在本项目中，以具有丰富结构类型和优异磁性能的埋嵌型过渡金属（铁钴镍系单元及二元）氧化物复合纳米颗粒作为研究对象，系统地研究和解析埋嵌型过渡金属氧化物复合纳米颗粒在外加应变场作用的微结构变化规律，结合非极性光场作用，采用物性测试手段、理论分析模拟以及第一性原理计算等，深入了解其微结构、物理外场作用调制以及宏观磁性之间的本质联系。协同利用应变场和非极性光场两种物理外场作用研究埋嵌型过渡金属氧化物复合纳米颗粒微结构变化对其宏观磁性的影响。获取埋嵌型过渡金属氧化物复合纳米颗粒在应变场和非极性光场协同调制下的新结构、新现象、新效应。实现高性能过渡金属（铁钴镍系单元及二元）氧化物纳米颗粒体系的结构设计和制备以及其宏观磁性的精确调制。

It is of great significance to study the relationship among the microstructure, external physical field modulation and magnetic properties of the transition metal oxides nanoparticles confined in solid state matrix. In this project, the confined transition metal (single and binary elements in Fe-Co-Ni system) oxides nanoparticles with rich crystal structures and excellent magnetic properties will be selected for investigation. The relationship among their microstructures, external fields modulation and magnetic properties of confined transition metal oxides nanoparticles will be systematically studied and analyzed under both strain field and non-polar optical field by using physical properties measurements, theoretical analysis and simulation, as well as the first-principles calculation. New structures, phenomena and properties of confined transition metal oxides nanoparticles under the co-modulation of strain field and non-polar light field will be obtained. Thus, the design and synthesis of confined transition metal (single and binary elements in Fe-Co-Ni system) oxides nanoparticles with high performance and the precise modulation of their magnetic properties will be realized.