Open AccessREASON FOR A METAMAGNETIC TRANSITION IN EuMn0.5Co0.5O3
Author(s) -
И.О. Троянчук,
М. В. Бушинский,
Н. В. Терешко,
А. Н. Чобот,
О. С. Мантыцкая,
Г. М. Чобот,
Валерий Михайлович Добрянский,
С. Н. Пастушонок
Publication year - 2018
Publication title -
doklady nacionalʹnoj akademii nauk belarusi
Language(s) - English
Resource type - Journals
eISSN - 2524-2431
pISSN - 1561-8323
DOI - 10.29235/1561-8323-2018-62-3-268-273
Subject(s) - metamagnetism , magnetization , condensed matter physics , ferromagnetism , materials science , phase transition , anisotropy , phase (matter) , magnetic anisotropy , magnetic field , chemistry , physics , optics , organic chemistry , quantum mechanics
The magnetic properties of perovskite EuMn0.5Co0.5O3, obtained under different synthesis conditions, have been studied. It is shown that the sample obtained at 1500 °C exhibits a metamagnetic transition, whereas in the sample obtained at 1200 °C, the field dependence of magnetization as in a ferromagnet was observed. The both samples have TC = 123 K and approximately equal to magnetization in large magnetic fields. Metamagnetism is associated with a transition from a noncollinear to a collinear magnetic phase, whereas the presence of clusters with the ordering of Co2+ and Mn4+ ions leads to ferromagnetism. The noncollinear phase is formed due to the competition of positive Co2+–Mn4+ and negative Mn4+–Mn4+, Co2+–Co2+ interactions and due to large magnetic anisotropy.