手套箱-磁体-溶液扫描隧道显微镜联用平台及其对离子液体中Fe纳米薄膜沉积行为研究

Ultrathin films of magnetic metals with many novel properties, such as giant magnetoresistance effect, high hardness and corrosion resistance, etc, has been widely used in many areas. It is very important to understand the nucleation mechanism of magnetic nano-films and future generation of magnetic ultrathin films materials by investigation of magnetic metals electrodeposition processes in Ionic Liquids under the influence of magnetic fields. However, the development of this research needs the joint use of the three technologies of controling the atmosphere in the glove box, tuning the magnetic field introduced by magnet and the characterization of solution scanning tunneling microscope(STM) to carry out smoothly. Due to the different self-structure and operating conditions of the three equipments, there are many problems unsolved to realize the combination of the three technologies. This work will be aimed at solving the glove box, magnet and solution STM compatible to build the first Glove box-Magnet-Solution STM Combo Platform. And based on this, we will do research on the electrodeposition behaviors of magnetic metal (Fe) in ionic liquids under the influence of external magnetic field.

磁性金属超薄膜有许多新奇的性能，如巨磁阻效应、高硬度和强抗腐蚀能力等，在诸多领域有着广泛的应用。在离子液体中开展外磁场调控下磁性金属电沉积行为的研究，对揭示磁性纳米薄膜生长机理，指导磁性金属超薄膜材料的制备，具有十分重要的意义。而此研究的开展需要手套箱的气氛控制、磁体施加的外磁场调控与溶液扫描隧道显微镜（STM）表征相结合，三种设备的联合使用才能进行。由于这三种设备自身结构和工作条件的不同，要实现它们的联用还有诸多问题没有解决。本项目意在解决手套箱、磁体与溶液STM之间的兼容性，搭建世界上首个手套箱-磁体-溶液STM联用平台，并以此为基础开展外磁场调制下磁性金属（Fe）在离子液体中电沉积行为研究。

磁性金属超薄膜有许多新奇的性能，如巨磁阻效应、高硬度和强抗腐蚀能力等，在诸多领域有着广泛的应用。原位观测磁场调控下磁性金属电沉积生长机理对制备新型的磁性薄膜材料有重要的指导意义。由于磁性金属多为活泼金属，此研究的开展需要手套箱的气氛控制、磁体施加的外磁场调控与溶液扫描隧道显微镜（STM）表征相结合，三种设备的联合使用才能进行。由于这三种设备自身结构和工作条件的不同，要实现它们的联用有许多特殊的要求。针对这些要求，执行团队设计了低纹波高压电源、高压放大电路、前置放大电路、溶液STM镜体，快速SPM控制器、可变场永磁磁体，手套箱改造、低压大推力精密压电步进器等关键部件，取得了预期的结果，完成了手套箱-永磁磁体-溶液STM平台的搭建。另外，在本项目中，以新研制的压电步进器为基础开发了一种小体积、可移植、线性度好、 超高分辨的长度测量工具---“原子晶格尺”，它拓展了扫描隧道显微镜的应用，在一些极端环境中超高分辨的长度测量的问题中有明显优势。还有，依托本项目，开展了锌铁氧化物等功能材料的设计和性能测试。本项目执行团队共发表SCI论文4篇，发明专利5项，搭建仪器平台一个。

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