  Cobalt based sulphides of compositional formula Co$ _{3} $A$ _{2} $S$ _{2} $
(A = Sn and In) are endowed with frustrated kagome lattice structure and a
plethora of novel phenomena determined from the topological band structure.
Here-in, we report on the detailed exploration of anisotropic magnetic
properties of single crystals of ferromagnetic compound Co$ _{3} $Sn$ _{2} $S$
_{2} $ under magnetic field $H$ applied along the c-axis $(H\parallel c)$ and
the ab-plane $(H\parallel ab)$. A low temperature clustered-glassy magnetic
behaviour is revealed in field-cooled and zero field-cooled magnetization and
memory effect measurement protocols. The sharp downturn and non-linearity
observed in the inverse susceptibility above the critical temperature $T
_{\text{C}} $ in the paramagnetic region corroborates to the presence of
short-range ferromagnetic clusters above $ T _{\text{C}} $ in Co$ _{3} $Sn$
_{2} $S$ _{2} $. The deviation from linear Curie-Weiss behaviour in the
paramagnetic state signifies the strong Griffiths singularity in the material.
The slow spin dynamics behaviour and zero spontaneous magnetization above $ T
_{\text{C}} $ give an evidence of Griffiths phase owing to the ferromagnetic
clusters. The Arrott plots derived from magnetization reveal convex type
curvature at low fields and linear positive behavior in the high field region,
confirming the second order magnetic phase transition in Co$ _{3} $Sn$ _{2} $S$
_{2} $. The Takahashi spin fluctuation theory analysis provides sufficient
evidence for itinerant ferromagnetism in Co$ _{3} $Sn$ _{2} $S$ _{2} $. A large
magneto-crystalline anisotropy concomitant with a high anisotropy field
suggests the dominance of strong spin orbit coupling phenomenon. Our
experimental results emphasize an intuitive understanding of the complex nature
of magnetism present in Co-based shandite systems.
