Nanostructured ternary compounds prepared by focused particle-beam induced deposition

本提案的目的是制造纳米结构的三元化合物与有趣的自旋电子和热电性能的聚焦电子束和聚焦离子束诱导沉积（FEBID和FIDID）的装置，并调查其结构，电气，热电和磁输运性能。制造方法是聚焦电子/离子束辅助化学气相沉积，其中同时使用几种前体气体来形成多组分功能纳米结构。由于其潜在的广泛的应用领域，该提案侧重于Heusler纳米结构化合物的研究和功能化。特别是，尺寸效应（离散能级间距，库仑阻塞）和晶粒间隧道耦合的传输性能的潜在技术相关的化合物，如纳米颗粒Co2 FeSi和Co2 MnSi，自旋电子和TiNiSn，热电应用中发挥的作用，将进行分析。

The aim of this proposal is to fabricate nanostructured ternary compounds with interesting spintronic and thermoelectric properties by means of focused electron- and focused ion-beam induced deposition (FEBID and FIBID) and to investigate their structural, electrical, thermoelectrical and magneto-transport properties. The fabrication method is a focused electron/ion beam assisted chemical-vapor-deposition where several precursor gases are simultaneously used to form multi-component functional nanostructures. Owing to their potentially wide field of applications, the proposal focuses on the investigation and functionalization of Heusler nanostructured compounds. In particular, the role played by size effects (discrete energy level spacing, Coulomb blockade) and inter-grain tunnel coupling on the transport properties of potentially technologically relevant compounds, such as nano-granular Co2FeSi and Co2MnSi, for spintronics and TiNiSn, for thermoelectric applications, will be analyzed.