Affiliation: | a Division of Electron Microscopic Research, Korea Basic Science Institute (KBSI) 113, Gwahangno, Yuseong-gu, Daejeon 305-333, Republic of Korea b Department of Electronics and Computer Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul 133-791, Republic of Korea c Department of Materials Science and Engineering, KAIST, Daejeon 305-701, Republic of Korea d Department of Electronic Materials Engineering, Kwangwoon University, Seoul 139-701, Republic of Korea e Thin Film Material Research Center, Korea Institute of Science and Technology, Seoul 136-701, Republic of Korea |