Magnetoelectric (Bi, Ln)Feo₃compounds: Crystal growth, structure and properties

Structural transformations and magnetic properties of Bi1–xLnx FeO3 (Ln = La, Nd, Eu) multiferroics

“…In Refs. [15,16] the results of X-ray studies are reported for monocrystalline samples of Bi 1-x La x FeO 3 system. The crystal symmetry was suggested to be triclinic and six different structural intervals have been found.…”

Size effects in multiferroicBiFeO3nanodots: A first-principles-based study

“…[19]) while T C has a more pronounced variation with the dot's size (the B parameter of the scaling law of the ferroelectric transition is around 70% larger than that of the magnetic transition). The coupling between magnetism and polarization is thus rather weak in BFO dots under SC conditions -as similar to the case of the corresponding bulk [41]. A magnetoelectric coupling being weak can also be guessed by comparing the data for β=1 and β=0.98.…”

Progress and prospect for high temperature single-phased magnetic ferroelectrics

“…Substituting Bi with rare earth, the quadratic magnetoelectric effect was found in the rhombohedral and triclinic phases, and the linear magnetoelectric effect was observed in the orthorhombic structure, the magnitude of which depends on the nature of the rare-earth element [100] . With LaFeO 3 of symmetry Pnma and uniform magnetic structure, the spin cycloidal magnetic structure has been demonstrated to destroy into an ordinary spatially uniform antiferromagnetic state near the concentration of 20%, corresponding to the phase transition with a change in the unit-cell symmetry R3c to C222 [44,99] .…”