Magnetic properties of two-dimensional materials are usually measured using Raman spectroscopy, Magneto-optic Kerr effect, Magnetic circular dichroism or Anomalous Hall effect techniques. The dimensionality of the system can be determined by measuring the scaling behaviour of magnetization ( M ), susceptibility ( χ χ ) or correlation length ( ξ ξ ) as a function of temperature. The corresponding critical exponents are β β , γ γ and v respectively. They can be retrieved by fitting