Causes of the Metamagnetism in a Disordered EuMn0.5Co0.5O3 Perovskite


Cite item

Full Text

Open Access Open Access
Restricted Access Access granted
Restricted Access Subscription Access

Abstract

The magnetic properties of the EuMn0.5Co0.5O3 perovskite synthesized under various conditions are studied in fields up to 140 kOe. The sample synthesized at T = 1500°C is shown to exhibit a metamagnetic phase transition, which is irreversible below T = 40 K, and the sample synthesized at T = 1200°C demonstrates the field dependence of magnetization that is typical of a ferromagnet. Both samples have TC = 123 K and approximately the same magnetization in high magnetic fields. The metamagnetism is assumed to be related to a transition from a noncollinear ferromagnetic phase to a collinear phase, and the presence of clusters with ordered Co2+ and Mn4+ ions leads to ferromagnetism. The noncollinear phase is formed due to the competition between positive Co2+–Mn4+ and negative Mn4+–Mn4+ and Co2+–Co2+ interactions, which make almost the same contributions, and to the existence of a high magnetic anisotropy.

About the authors

I. O. Troyanchuk

Scientific–Practical Materials Research Centre

Author for correspondence.
Email: troyan@physics.by
Belarus, ul. P. Brovki 19, Minsk, 220072

M. V. Bushinsky

Scientific–Practical Materials Research Centre

Email: troyan@physics.by
Belarus, ul. P. Brovki 19, Minsk, 220072

N. V. Tereshko

Scientific–Practical Materials Research Centre

Email: troyan@physics.by
Belarus, ul. P. Brovki 19, Minsk, 220072

A. N. Vasiliev

Moscow State University; Ural Federal University; South Ural State University

Email: troyan@physics.by
Russian Federation, Moscow, 119991; ul. Mira 19, Yekaterinburg, 620002; pr. Lenina 76, Chelyabinsk, 454080

Supplementary files

Supplementary Files
Action
1. JATS XML

Copyright (c) 2018 Pleiades Publishing, Inc.