作者单位: | [1]R&D Center, Chang Sung Co. Ltd., 11-9, Namdong Industrial Area, Namdong-gu, Incheon 405-100, Republic of Korea [2]Department of Material Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749,Republic of Korea |