J. Phys. IV France 07 (1997) C1-357-C1-358
Magnetic Phase Transformation in the RE(Mn0.5B0.5)O3 Perovskites (RE is a Rare Earth Ion, B-Ni, Co)I.O. Troyanchuk1, H. Szymczak2, N.V. Samsonenko1 and A. Nabialek2
1 Institute of Physics of Solids and Semiconductors, Academy of Sciences of Belarus, P. Brovki 17, Minsk 220072, Belarus
2 Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland
A magnetic study of perovskites RE(Mn1-xBx)O3 (RE=Eu, Gd, Tb, Dy, Y ; B=Ni, Co) is reported. It is found that investigated perovskites are nonhomogenous ferromagnets with relatively high Curie temperatures. The magnetic anisotropy of Ni-containing perovskites is much lower than that of Co-containing ones. It is supposed that domains with different charge state of ions and magnetic structure coexist in a wide range of Co- and Mn- concentrations. The metamagnetic behavior has been observed for RE(Mn0.5Co0.5)O3 perovskites (RE=Gd,Tb,Dy ,Y).
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