160GdMn2O5 under pressure, a good candidate for multiferroics
RMn2O5 are multiferroic compounds which are promising for applications in data storage. In TbMn2O5, a strong magneto-electric effect has been evidenced. In particular, a spin-induced ferroelectric transition occurs in a CM magnetic phase with the propagation wave vector qCM =(½+, 0, ¼+). The role of the R3+ size has been emphasized because of the influence of the rare earth element. GdMn2O5 with intermediate R3+ size is at the boundary between ferroelectric and non-ferroelectric compounds. This compound is particularly interesting due to its strong electric polarization and giant tenability (ΔP = 5000 μC/m2) with magnetic field. In addition, the electric polarization increased under pressure. With the help of isotope 160Gd enriched compound, our team already determined its magnetic structure at ambient pressure by neutron diffraction experiment. Combined with the results of PrMn2O5 under pressure we obtained recently, it will be very promising to investigate the magnetic ordering of 160GdMn2O5 and the possible phase transition associated with the large magnetoelectric effect under pressure.
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WEI PENG; BALEDENT Victor; CHATTOPADHYAY Sumanta; FOURY LEYLEKIAN Pascale; Thomas C. Hansen and YAHIA Ghassen. (2018). 160GdMn2O5 under pressure, a good candidate for multiferroics. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-31-2558
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