Fabrication, and structural instability of a van-der-Waals Fe\(_5\)GeTe\(_2\) ferromagnet
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DOI:
https://doi.org/10.15625/0868-3166/22759Abstract
This work presents the solid-state reaction method used to fabricate a polycrystalline Fe5GeTe2 (FGT) sample, in which chemical reactions of precursors took place at 1000 oC in a sealed evacuated quartz ampoule. X-ray diffraction analyses indicate the monophase in the rhombohedral Rm structure of the as-prepared FGT. Unlike ZnO and spinel ferrites, FGT is unstable and easy to decompose to constitute Fe-, Te- and Ge-related secondary materials by high-energy ball milling for a short time. Furthermore, the storage of FGT under normal atmospheric conditions for a period also leads to its decomposition. Such decompositions would directly influence the magnetic behaviors of FGT. This would limit its application potential in next-generation electronic and spintronic devices.
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National Foundation for Science and Technology Development
Grant numbers 103.02-2023.61
