Effects of Fe deficiency and Co substitution in polycrystalline and single crystals of Fe${}_3$GeTe${}_2$

D. A. Mayoh, G. D. A. Wood, S. J. R. Holt +4

Fe${}_3$GeTe${}_2$ is a two-dimensional van der Waals material with a ferromagnetic ground state and a maximum transition temperature $T_{\mathrm{c}}\sim 225$ K. However, when Fe$_{…