Phase Transformation in the Eu1-xCaxMnO3 Perovskites

I.O. Troyanchuk; H. Szymczak; N.V. Samsonenko; A. Nabialek

doi:doi:10.1051/jp4:19971146

Issue		J. Phys. IV France Volume 07, Number C1, Mars 1997 7th INTERNATIONAL CONFERENCE ON FERRITES


Page(s)		C1-359 - C1-360
DOI		https://doi.org/10.1051/jp4:19971146

7th INTERNATIONAL CONFERENCE ON FERRITES

J. Phys. IV France 07 (1997) C1-359-C1-360
DOI: 10.1051/jp4:19971146

Phase Transformation in the Eu_1-xCa_xMnO₃ Perovskites

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

Abstract
Magnetization and crystal structure of Eu_1-xCa_xMnO₃ (0≤x≤1) perovskite have been studied. It is shown that these compounds can be divided into four concentration regions in which different magnetic phases coexist. The antiferromagnetic phases are associated with the regular arrangement of Mn³⁺ and Mn⁴⁺ ions in ratios 1:0, 1:1, 1:3 and 0:1 respectively. The ferromagnetic phases are attributed to the charge disordered states and arise in 0≤x≤0.4 and 0.8≤x≤1 concentration regions. The samples x=0.8 and 0.85 show metamagnetic behavior which might result from destruction of the charge ordered (1:3) state.