**5. Conclusion**

In this paper, it was extensively studied by DC magnetization the critical process towards the FM-PM state transition in La0.67Ca0.18Sr0.15Mn0.98Ni0.02O3 polycrystalline manganite. We have extracted the values of critical exponents of our sample by the Modified Arott plot method and the Kouvel-Fisher method. It is interesting to note that the found exponents are quite similar to those expected from the universality class of 3D-Ising model.
