47th Annual Conference on Magnetism and Magnetic Materials, Tampa, Florida, USA(2002)

 

Molecular Dynamics Study for Deposition Behavior of Magnetic Materials

 

Sang-Pil Kim, Yong-Chae Chung, Seung-Cheol Lee, Kwang-Ryeol Lee, and Kyu-Hwan Lee 
 

 

 Control of the interface structure of atomic scale multilayer is a fundamental issue to improve the performance of spin electronic devices. Deposition behavior of Co on Al surface at 300 K was investigated by MD simulation. The deposited Co resulted in the formation of CoAl surface alloy regardless of the Al surface orientation. Structure of the surface alloy was dependent on the substrate orientation. Crystalline B2 structure was formed on Al (001) surface. On the contrary, amorphous mixed layers were evolved on Al (011) and (111) surfaces. In the case of Al (001) surface, 4 MLs of the surface alloy were observed, which is consistent with the previous experimental observation. The present work shows that the formation of CoAl surface alloy should be considered even at the low substrate temperature and the low incident energy of deposited atoms.