3D-Ising like ferromagnetism in skyrmionic-bubbles host infinite-layer LaSrMnO manganite perovskite.

The critical behavior of infinite-layer LaSrMnO of Ruddlesden-Popper series manganite has been studied around the transition temperature ([Formula: see text]). To reveal the universality class that explains the critical behavior in LaSrMnO several methods, such as modified Arrott plots, Kouvel-Fisher, entropy and critical isotherm analysis have been employed. The critical exponent [Formula: see text] for infinite-layer is obtained independently from critical magnetization isotherm and found to satisfy the Widom scaling relation [Formula: see text]. The universality class of the critical phenomenon in infinite-layer LaSrMnO manganite can be explained with the help of renormalization group theory approach for three dimensional (3D) systems. We have shown that a short-range 3D-Ising type interaction is responsible for ferromagnetic and second-order phase transition to paramagnetic phase.