@article{oai:oist.repo.nii.ac.jp:00001651,
 author = {Ohta, Tomoharu and Sakai, Kosuke and Taniguchi, Hiroki and Driesen, Benjamin and Okada, Yoshinori and Kobayashi, Kensuke and Niimi, Yasuhiro},
 issue = {4},
 journal = {Applied Physics Express},
 month = {Mar},
 note = {We have fabricated thin films of a van der Waals (vdW) ferromagnetic metal Fe₅GeTe₂ and characterized them by measuring the anomalous Hall effect. While the bulk Fe₅GeTe₂ does not exhibit a perpendicular magnetic anisotropy (PMA) unlike Fe₃GeTe₂, PMA emerges in the thin film devices. Furthermore, the PMA is enhanced with decreasing thickness of Fe₅GeTe₂. In particular, a thin film (5 unit-cell layer) device fabricated with Fe₅GeTe₂ quenched at 1050 K has two times larger coercive field than that prepared without quenching. Such a PMA should be useful for future vdW spintronic devices.},
 title = {Enhancement of coercive field in atomically-thin quenched Fe5GeTe2},
 volume = {13},
 year = {2020}
}