Cr2Ge2Te6 Cr2Ge2Te6 is a ferromagnetic insulator, with a Curie temperature of 61 K and is an insulator below T <100K. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. CrGeTe3 is a trichalcogenide.

The Cr2Ge2Te6 crystals produced at HQ Graphene have a typical lateral size of ~0.2-0.3 cm, and have a metallic appearance.

Cr2Ge2Te6 crystal properties
Crystal size ~2-3 mm
Electrical properties Ferromagnetic insulator (Curie temperature ~61K)
Crystal structure Hexagonal
Unit cell parameters a = b = 0.683 nm, c = 2.056 nm, α = β = 90°, γ =120°
Type Synthetic
Purity >99.995 %
Characterized by XRD, Raman, EDX
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The single crystal Cr2Ge2Te6 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 Cr2Ge2Te6:

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

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

Raman spectrum of a single crystal . Measurement was performed with a 785 nm Raman system at room temperature.

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