1. Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
2. Insulation Materials Research Center, Korea Electrotechnology Research Institute, Bulmosan-ro 10-gil 12, Seongsan-gu, Changwon-si, Gyeongsangnam-do 51543, Korea
3. Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
4. KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
5. Spin Convergence Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea