Kim, S.J. Choi, D. Kim, K.-W. Lee, K.-Y. Kim, D.-H. Hong, S. Suh, J. Lee, C. Kim, S.K. Park, T.-E. Koo, H.C. 2024-01-19T13:32:34Z 2024-01-19T13:32:34Z 2022-01-10 2021-10-26 1936-0851 https://pubs.kist.re.kr/handle/201004/116249 Interface engineering is an effective approach to tune the magnetic properties of van der Waals (vdW) magnets and their heterostructures. The prerequisites for the practical utilization of vdW magnets and heterostructures are a quantitative analysis of their magnetic anisotropy and the ability to modulate their interfacial properties, which have been challenging to achieve with conventional methods. Here we characterize the magnetic anisotropy of Fe3GeTe2 layers by employing the magnetometric technique based on anomalous Hall measurements and confirm its intrinsic nature. In addition, on the basis of the thickness dependences of the anisotropy field, we identify the interfacial and bulk contributions. Furthermore, we demonstrate that the interfacial anisotropy in Fe3GeTe2-based heterostructures is locally controlled by adjacent layers, leading to the realization of multiple magnetic behaviors in a single channel. This work proposes that the magnetometric technique is a useful platform for investigating the intrinsic properties of vdW magnets and that functional devices can be realized by local interface engineering. ？ 2021 American Chemical Society. English American Chemical Society Interface Engineering of Magnetic Anisotropy in van der Waals Ferromagnet-based Heterostructures Article 10.1021/acsnano.1c05790 1 ACS Nano, v.15, no.10, pp.16395 - 16403 ACS Nano 15 10 16395 16403 N scie scopus 000711790600080 2-s2.0-85117683722 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article in Press Ferromagnetic materials Ferromagnetism Germanium compounds Iron compounds Magnetic anisotropy Magnets Superconducting materials Conventional methods Effective approaches Ferromagnets Hall measurements Interface engineering Interfacial property Local interface engineering Perpendicular magnetic anisotropy Van der Waal Van der waal ferromagnet Van der Waals forces Fe3GeTe2 heterostructure local interface engineering magnetic anisotropy perpendicular magnetic anisotropy van der Waals ferromagnet