  Shastry-Sutherland lattice was observed as alternative ground state in Rare
Earth intermetallic with Mo$_2$B$_2$Fe and U$_2$Pt$_2$Sn anisotropic structures
where magnetic frustration is favored. In the case of Ce$_2$Pd$_2$Sn, it was
shown that such phase can be suppressed by the application of magnetic field
and, in this work, its stability is studied as a function of the electronic
concentration by doping the Sn(4+) lattice with In(3+) atoms. Magnetic and
specific heat measurements show that around 50\% substitution the Shastry
Sutherland lattice vanishes in a critical point. This result confirms the
strong dependence of that phase on the electron density because a recent
investigation on the Pd rich solid solution
Ce$_{2+\epsilon}$Pd$_{2-\epsilon}$In$_{1-x}$Sn$_x$ (with $\epsilon < 0$)
demonstrates that atomic disorder dominates the phase diagram at intermediate
Sn/In concentration inhibiting magnetic frustration effects. In the alloys
investigated in this work, the $\epsilon >0$ character stabilizes the
ferromagnetic ground state all along the concentration, allowing the Shastry
Sutherland lattice formation on the Sn rich side.
