2024-03-28T20:19:08Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/191262016-05-06T11:41:08Zcom_10261_78com_10261_3col_10261_331
http://hdl.handle.net/10261/19126
10.1016/j.jmmm.2007.03.055
18947
Structural and magnetic properties of Er(Co,Mn)O3 perovskite
Elsevier
2007
artículo
Antunes, A. B.
Peña, Octavio
Moure Jiménez, Carlos
Gil, Vanesa
André, G.
Spin reversal
Ferrimagnetism
2007
In this work, we present the partial substitution of Mn by Co in ErCoxMn1 xO3 manganites (0.2pxp0.7). Besides the structural
changes due to a smaller tolerance factor, this perovskite system shows very interesting magnetic properties. Magnetic iso-field studies
(ZFC–FC) reveal this system is ferrimagnetic, leading to a spin reversal at low temperature due to a negative exchange interaction
between the two sublattices (rare-earth and transition metal ones). Furthermore, for samples near the ErCo0.5Mn0.5O3 composition, a
very unusual behavior is observed when magnetization loops are performed at low temperature: a step-like transition occurs at about 4 T
with increasing magnetic field, while the increasing and decreasing branches of the magnetization curves intersect in the low-field region.
Neutron diffraction experiments were performed for the nominal composition (ErCo0.5Mn0.5O3) in order to study the evolution of the
lattice parameters and magnetic structure at zero field in samples annealed under different atmospheres (air and oxygen). Results are
discussed in relation to the presence of several magnetic entities and their respective exchange interactions.
r 2007 Elsevier B.V. All rights reserved.
PACS: 75.25.+z; 75.30.Et; 75.50.Gg; 75.47.Lx
closedAccess
Journal of Magnetism and Magnetic Materials 316 (2007) e652–e655