Low-Doped Regime Experiments in LaMnO3 Perovskites by Simultaneous Substitution on Both La and Mn Sites

Abstract

Although extensive substitution studies exist on LaMnO3 perovskites, simultaneous substitution at the La and Mn sites in the low-doping regime is not as common and provides important insights into the subtle balance of various competing effects acting on the crystal structure and the magnetic properties. This chapter presents a study of the evolution of the crystal structure and magnetic properties by simultaneous substitution of magnetic and non-magnetic ions at the perovskite A and B sites, respectively. It will examine some of the ways in which experiments on the evolution of magnetic properties provide a suitable balance scenario between the competitive effects arising from doping at each site. The work discusses the evolution of the Curie-Weiss behavior and the formation of ferromagnetic (FM) clusters above the Curie temperature, whose structure is also dependent on doping.