Low Temperature Physics: 32, 709 (2006); https://doi.org/10.1063/1.2219494 (16 pages)
Fizika Nizkikh Temperatur: Volume 32, Number 8-9 (August 2006), p. 933-953    ( to contents , go back )

Investigation of magnetoelectric behavior peculiarities of multiferroic family RMn2O5 in strong magnetic fields (Review Article)

A.M. Kadomtseva, S.S. Krotov, Yu.F. Popov, and G.P. Vorob`ev

The Moscow State University М.В. Lomonosov , Moscow, 119992, Russia
E-mail: êadomts@plms.phys.msu.ru
pos Анотація:

Received January 24, 2006


The magnetic, magnetoelectric and magnetoelastic properties of the orthorhombic manganates family RMn2O5 (R = Eu, Y, Gd, Er) in strong pulsed magnetic fields. Unlike to the manganites family RMnO3 the systems under consideration comprises two subsystems of magnetic ions Mn3+ and Mn4+. The interactions between these ions (of ferro- and/or antiferromagnetic origin dependent on the type and size of the rare-earth R ion) substantially enhance the effect of frustration observed the both mentioned families. As a result of aditional magnetic degeneracy, a cascade of phase transitions with the onset of a new incommensurate, then commensurate and sometimes again (in a reentrant manner) incommensurate magnetic structures takes plase. The inherent magnetoelectric interactions in these multiferroic materials provide possibilities not only to influence effectively on phase transitions by magnetic fields but to control the effects of electric polarization in them.

75.80.+q -

Key words: magnetoelectric interactions, ferromagnetoelectrics, ferroelectrics, incommensurate structures, exchange-noncollinear magnetics, rare-earth manganates, multiferroics.

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