1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
2. Center for Energy Efficiency and Materials, Korea Institute of Energy Research, Daejeon 34129, Republic of Korea
3. Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea
4. Department of Nanotechnology & Advanced Materials Engineering, Sejong University, Seoul 05006, Republic of Korea
5. Memory Thin Film Technology, Memory Manufacturing Operation Center, Samsung Electronics, Hwaseong 18448, Republic of Korea
6. School of Medicine, Kyungpook National University, Daegu 41405, Republic of Korea