Abstract
Nanohetero-structures generally incorporate two or more components of different natures, such as metals (conductors), ceramics (insulators), and semiconductors. Many of them have already been practically applied in electronic devices, which is generally accompanied by an outstanding innovation of the devices. For example, magnetic nanohetero-structures have found their applications in the field of magnetic recording. As we know magnetic tunnel junctions (MTJ) has been used as the read head of hard disc drive (HDD), which greatly improved the areal density of HDD. A new type of memory, magnetoresistive random access memory (MRAM) is also under developing based on MTJ. During recent years, varieties of nanohaetero-structures have been designed and fabricated, many interesting interactions and couplings between the components have also been disclosed. In this talk, our recent results related to the design, fabrication and characterization of several magnetic nano-hetero structures will be presented. Especially, the interactions between different components in such structures will be discussed.

Biography
Prof. Shi Ji received his Bachelor’s degree from Dalian University of Technology in 1984, and his Master’s degree from Harbin Institute of Technology in 1987.  He then worked in Lanzhou University as a faculty member from 1987 to 1993. After he received his Doctor’s degree from Tokyo Institute of Technology in 1997, he joined the National University of Electro-Communications of Japan as a faculty member. He started his career in Tokyo Institute of Technology from 2002, and is now working as a full Professor in the Department of Metallurgy and Ceramics Science of Tokyo Institute of Technology. His research areas include thin film technology, nanohetero structure materials, and magnetic properties.