Kyu-yong Kim

The Future Prospect of Semiconductor Nonvolatile Memory

As mobile appliances are prevailing in our daily lives, the nonvolatile memory suitable for mobile applications such as MP3, DSC, PDA and so on becomes indispensable elements and it is anticipated that the non-volatile memory usage will be much increased in future due to such diversified applications and some possibilities of supplanting incumbent applications like HDD. Nonvolatile memory technology, especially NAND flash technology is going through the fastest evolution amongst the silicon technologies. It is highly expected that the same trend of evolution or more the aggressive will be continued in the future. This paper presents the different types of existing and emerging nonvolatile memories such as NAND technology, NOR falsh, PRAM, FRAM, MRAM or spintronics, RRAM and others, and the challenges faced by each of this technologies.

Characteristic analysis of eddy current loss in permanent magnet linear synchronous generator considering tapped holes in movers using 3D analytical method

This paper describes the use of an analytical approach using a 3D analytical method to calculate the eddy current loss of a permanent magnet linear synchronous generator (PMLSG) considering tapped holes in permanent magnet movers.

Enhancement of signal to noise ratio by underlayer control in CoCr-based perpendicular magnetic recording media

In this paper, enhancement of signal to noise ratio by underlayer control in CoCr-based perpendicular magnetic recording media was discussed. Underlayer control for SNR, thermal stability, magnetic hysteresis, structure of the media also investigated.