Kang, Byeongwoo Hwang, Young Hyun Kim, Yong Jin Lee, Jong Seong Song, Seo Hyun Lee, Seungwon Lee, Jisung Lee, Oukjae Park, Seung-Young Ju, Byeong-Kwon 2024-04-04T02:32:04Z 2024-04-04T02:32:04Z 2024-04-04 2024-03 https://pubs.kist.re.kr/handle/201004/149576 The utilization of CoFeB thin films in spintronic devices has attracted significant attention due to their exceptional magnetic properties, which include high saturation magnetization and spin polarization. However, the effect of ambient temperature on the magnetic properties of CoFeB/MgO frames, particularly those with different buffer and capping layers, remains unexplored. Therefore, in this study, the magnetostatic and dynamic properties of CoFeB/MgO frames were investigated at various temperatures. Using vibrating sample magnetometry and ferromagnetic resonance spectroscopy, changes in key parameters such as saturation magnetization, the Gilbert damping constant, magnetic anisotropy field, in-plane uniaxial magnetic anisotropy energy, and thermal stability factor were investigated. Furthermore, the thermal stabilities of CoFeB/MgO frames with Ta buffer and capping layers were compared with those of CoFeB/MgO frames with W buffer and capping layers by examining the changes in the key parameters at various temperatures. These results reveal that the thermal stability of the latter surpassed that of the former. This study provides significant insights for the development of thermally robust spintronic devices capable of operating above room temperature. English MDPI Effects of Buffer and Capping Layers on Thermal Stability of CoFeB/MgO Frames at Various Temperatures Article 10.3390/app14062394 1 Applied Sciences-basel, v.14, no.6 Applied Sciences-basel 14 6 Y scie 001191600100001 Chemistry, Multidisciplinary Engineering, Multidisciplinary Materials Science, Multidisciplinary Physics, Applied Chemistry Engineering Materials Science Physics Article DYNAMIC MAGNETIC-PROPERTIES ROOM-TEMPERATURE ANISOTROPY MAGNETORESISTANCE SPINTRONICS THICKNESS DESIGN high-temperature measurements vibrating sample magnetometry ferromagnetic resonance spintronics magnetic thin film CoFeB thin film