纳米粒子装配颗粒膜的巨霍尔效应研究

项目名称： 纳米粒子装配颗粒膜的巨霍尔效应研究

项目编号： No.51301145

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： 王来森

作者单位： 厦门大学

项目金额： 25万元

中文摘要： 颗粒膜中的巨霍尔效应因在磁性传感器、磁场探测器及新型霍尔器件等领域中的巨大应用前景，引起了极大的研究兴趣。然而，颗粒膜是一个极其复杂的体系，其颗粒大小、粒径分布、颗粒间距等众多且相互制约的微结构因素，使颗粒膜体系的电磁输运现象极其复杂，造成巨霍尔效应的产生机制尚不清晰。因此，发展一种可以独立控制颗粒膜中颗粒大小、粒径分布、颗粒间距的新的制备方法，对开展颗粒膜中巨霍尔效应的研究具有重大的学术价值。本项目利用实验室自行研制的纳米粒子束流复合沉积系统可单独控制颗粒膜的颗粒大小、粒径分布和颗粒间距的特点，将制备的Fe、Cu、Mo金属纳米粒子与磁控溅射制备的SiO2、ZnO薄膜在真空室中原位装配到基片上，制备不同于常规颗粒膜体系的新型"纳米粒子装配颗粒膜"，并深入探讨这种新型颗粒膜的微结构（如颗粒大小、粒径分布、颗粒间距等）对物理特性和巨霍尔效应的影响规律，阐明颗粒膜巨霍效应的产生机制。

中文关键词： 巨霍尔效应；纳米粒子；颗粒膜；纳米粒子装配颗粒膜；电输运

英文摘要： The giant Hall effect (GHE) observed in granular films had attracted intense research interest over resent years owing to its great application potential in the fields of magnetic sensors, magnetic field detectors and new Hall devices. However, granular films are extremely complex system, interactive microstructural factors such as the particle size, size distribution and interparticle spacing lead the electronic transport property has an extremely elusive phenomena. The mechanism of the giant Hall effect (GHE) in granular films is still not clear. Therefore, developing a new preparation method which can independently control the particle size, size distribution and interparticle spacing of the granular films and study the giant Hall effect (GHE) is of significant academic value. This project will use the our own designed nanoparticles beam composite deposition system with the character of controlling the particle size, size distribution and interparticle spacing in granular films individually, and preparing the new-type nanoparticle-assembled granular films by assembling the Fe, Cu, Mo nanoparticles prepared by nanoparticles beam source with the SiO2 or ZnO films prepared by normal magnetron sputtering. In this project, relations between the microstructure factors (such as the particle size, size distribution,

英文关键词： Gaint Hall effect；Nanoparticles；Granular films；Nanoparticles-assembled films；Electron transport