Deficient Ba effects upon structural and magnetic properties of Pr0.7Ba0.3MnO3 were investigated. Pr0.7Ba0.3-xMnO3 (with x = 0 to 0.1) powder samples were elaborated by the conventional ceramic method at 1400C. All the samples crystallize in the orthorhombic perovskite system with Pnma space group. Vacancy presence in samples lead to modify the octahedra rotation and dimension in the structure without any structural

transformation. All investigated samples exhibited a paramagnetic to ferromagnetic transition with decreasing temperature. The Curie temperature and the saturation magnetization, at 10K, decreased slightly with increasing vacancy content.

Vacancy Effects on the Crystallographic and Magnetic Properties in Lacunar Pr0.7Ba0.3-xMnO3 Oxides. M.Ellouze, W.Boujelben, A.Cheikhrouhou, H.Fuess, R.Madar: Solid State Communications, 2002, 124[4], 125-30