New ferromagnetic oxides derived from the perovskite structure prepared under high pressures

Abstract

Using a simple approach of ferromagnetic interactions through a 180° superexchange in a perovskite lattice a composition has been set-tip : La₂MnIrO₆. A band-structure calculation having confirmed such a simple approach, the compound was prepared and characterized. Structural and magnetic studies have confirmed the ferromagnetic behaviour of such an oxide. This methodology is now used to define a new class of ferromagnetic oxides.