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Wafer-Scale Room-Temperature Ferromagnetic Chromium Disulfide via Sulfur Monomers
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DOI：10.1021/acs.nanolett.5c05794.png)
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Abstract
En 中文
The wafer-scale synthesis of magnetic two-dimensional transition metal dichalcogenides (TMDCs) remains a critical challenge due to their metastability and the rapid oxidation of metallic precursors, which block conventional sulfurization routes. Chromium disulfide (CrS2), in particular, is highly attractive for spintronic applications because of its robust room-temperature ferromagnetism, yet its wafer-scale growth has remained elusive. Here, we report a universal strategy using ZnS-derived sulfur monomers to overcome the chemical reaction barrier imposed by native oxide layer, enabling the selective formation of crystalline CrS2 films across 2-in. wafers. The resulting films exhibit excellent uniformity, controllable thickness, and robust ferromagnetism above room temperature. Beyond CrS2, this method demonstrates broad application by yielding wafer-scale VS2, MnS, FeS2, CoS2, and the ternary CrCoS4 with comparable quality. Our results establish a versatile and scalable synthesis platform for 2D magnetic TMDCs, opening a pathway toward their integration in advanced spintronic devices.
Keywords:
Wafer-scale
Room-temperature ferromagnetism
TMDC
CrS2
CVD
Journal
IF:
9.1
Papers:
2.7W
Citations:
16.5W
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Cited Papers