1. Insulation Materials Research Center Korea Electrotechnology Research Institute (KERI) Jeongiui‐gil 12, Seongsan‐gu Changwon 51543 Republic of Korea
2. Electro‐functional Materials Engineering University of Science and Technology (UST) Jeongiui‐gil 12, Seongsan‐gu Changwon 51543 Republic of Korea
3. KIURI Institute Yonsei University Yonsei‐ro 50, Seodaemun‐gu Seoul 03722 Republic of Korea
4. Department of Materials Science and Engineering Yonsei University Yonsei‐ro 50, Seodaemun‐gu Seoul 03722 Republic of Korea
5. LOTTE Chemical Gosan‐ro 56 Uiwang‐siUiwang‐si Gyeonggi‐do 16073 Republic of Korea
6. Spin Convergence Research Center Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea