J. Phys. IV France 07 (1997) C1-361-C1-362
Magnetic Properties of Nonstoichiometric Perovskites R1-xMnO3+y (R = La, Eu)A.V. Zubetz, I.O. Troyanchuk and E.F. Shapovalova
Institute of Physics of Solids and Semiconductors, Academy of Sciences of Belarus, P. Brovki 17, Minsk 22072, Belarus
The crystal structure and magnetic properties of orthomanganites R1-xMnO3+y (R=La, Eu ; x≤0.2 ; y ≤0.13) were investigated. It was shown that the increase of oxygen content leads to the transformation from the antiferromagnetic to the ferromagnetic state in these compounds. The Curie temperatures of La1-xMnO3+y and freezing temperatures of magnetic clusters for Eu1-xMnO3+y in the samples with deficit of A-cations are higher than those in parent compounds (with x=0). The magnetic data indicate that the mixed magnetic state involving ferro- and antiferromagnetic domains is realized in the intermediate range of x, y values.
© EDP Sciences 1997