Juyoung Jeong Lee, Yongwoo Jeong, Yoon Hee Jeehoon Kim Hye Jung Chang 2024-01-12T05:42:52Z 2024-01-12T05:42:52Z 2021-09-29 2018-10 https://pubs.kist.re.kr/handle/201004/79063 Lorentz Transmission electron microscopy (LTEM) is one of the powerful instruments to observe thenanoscale structural and the magnetic field features of materials simultaneously. Recently,topological-in-origin robust magnetic skyrmions have been reported in several materials systemsutilizing LTEM, mostly in the noncentrosymmetric B20 crystal system at low temperature, whichlimits the practical application. Here, we report novel hard skyrmions in one of the strongestferromagnets, which can be operated at high temperature above room temperature. This is ofimportance stepping stone since it paves the way for an immense application potential by providinga new approach to make skyrmions in hard magnet materials through appropriate field cooling. Thecontrol and visualization was performed in the LTEM (FEI; Titan80-300) equipped with heatingholder. Various skyrmion like bubbles formed near the skyrmion window will be also discussed inthe presentation. English 아시아태평양이론물리센터 Lorentz TEM Skyrmion Finding Skyrmion in a Strong Permanent Magnet Using Lorentz TEM Conference 2 Workshop on Spin-orbit Coupled Topological States Workshop on Spin-orbit Coupled Topological States KO POSCO International Center, 포항 2018-10-01