Joyal John Abraham

1 Introduction Van der Waals (vdW) materials have garnered significant attention in solid state physics and materials research since the isolation of graphene.[1] Remarkable success in the exfoliation of this class of materials due to the lack of significant interlayer chemical bonds unlocks vast potential for applications in the fields of advanced electronics, optoelectronics, and spintronics.[2-5] Furthermore, even in their bulk form, vdW materials often retain a quasi-2D character, making...

In the quest for 2D conducting materials with high ferromagnetic ordering temperature the new family of the layered FenGeTe2 compounds, especially the near-room-temperature ferromagnet Fe4GeTe2, receives a significant attention. Fe4GeTe2 features a peculiar spin reorientation transition at TSR ≈ 110 K suggesting a non-trivial temperature evolution of the magnetic anisotropy (MA)—one of the main contributors to the stabilization of the magnetic order in the low-dimensional systems.

X-Ray Diffraction Single crystal X-ray diffraction (XRD) measurements were performed in 10–320 K temperature range at a high-performance laboratory XRD facility VEGA (Versatile Extreme conditions Generating diffraction Apparatus), optimized for resolution and sensitivity.