3R-NbS2 (3R phase Niobium Disulfide)

3R NbS2 Niobium Disulfide 3R-NbS2 is a metal. Note that NbS2 also exists in the 2H-NbS2 phase which is a superconductor with Tc ~6K. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Niobium Disulfide belongs to the group-V transition metal dichalcogenides (TMDC). To buy 3R-NbS2 crystals please click here.

The 3R phase NbS2 crystals produced at HQ Graphene have a typical lateral size of ~0.4 cm, trigonal/hexagonal shaped and have a metallic appearance.

3R-NbS2 crystal properties
Crystal size ~4 mm
Electrical properties Metal
Crystal structure hexagonal
Unit cell parameters a = b = 0.330 nm, c = 1.792 nm, α = β = 90, γ = 120°
Type Synthetic
Purity >99.995%
Characterized by XRD, Raman, EDX
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The single crystal 3R NbS2 is characterized using:

XRD: single crystal and powder X-ray diffraction (D8 Venture Bruker and D8 Advance Bruker)
EDX: Energy-dispersive X-ray spectroscopy for stoichiometric analysis
Raman: 785 nm Raman system

Raman, XRD and EDX on 3R-NbS2:

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X-ray diffraction on a single crystal 3R-NbS2 aligned along the (001) plane. XRD diffraction was performed at room temperature using a D8 Venture Bruker. 5 XRD peaks correspond, from left to right, to (00l) with l = 3, 6, 9, 12, 15

Powder X-ray diffraction (XRD) of a single crystal 3R-NbS2. X-ray diffraction was performed at room temperature using a D8 Venture Bruker.

Stoichiometric analysis of a single crystal 3R-NbS2 by Energy-dispersive X-ray spectroscopy (EDX).

HQ Graphene Wiki on:

3R NbS2 (3R phase Niobium disulfide)

1. El Youbi, Z., et al. "Fermiology and electron-phonon coupling in the 2 H and 3 R polytypes of Nb S 2." Physical Review B 103.15 (2021): 155105.

2. Mehmood, N. Optoelectronic and Thermal Properties of Metallic Transition Metal Dichalcogenides. Diss. Bilkent Universitesi (Turkey), 2020.


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